Yes. All progressives are liberal, but not all liberals are progressive.

The problem with "Liberal" and "Progressive" is that human beingings do not fix exactly into any mold. As an example, I voted for Hillary despite that fact that I am an European Style Socilist in the manner of Burnie Sanders (only more extream). Howver, Burnie not running, I had to vote for the lesssor of the the two evils and the one closest to my posistion...and then she was not all that near. Many people are like that...in that they identify with the faction that is NEAREST to them albeit not a real good fit. It would be a big mistake to consider me a Liberal or Progesssive...I am a died in the wool sociolst who think Dems are generally too damned stupid to realize that the Republicans are the new Nazis.

What does it matter? These labels are interchangeable. From Dictionary.com:

Progressive:

1. Favoring or advocating progress, change, improvement, or reform, as opposed to wishing to maintain things as they are, especially in political matters: a progressive mayor.

2. making progress toward better conditions; employing or advocating more enlightened or liberal ideas, new or experimental methods, etc.: a progressive community.

Liberal:

1.favorable to progress or reform, as in political or religious affairs.

2.(often initial capital letter) noting or pertaining to a political party advocating measures of progressive political reform.

I think we are in a post label environment. These terms, these characterisations, don't mean anything anymore - primarily because they are processed by the 24 second news cycle which is the internet. Oh, sure, the news industry uses these terms - you like guns, you're conservative; I don't like guns, I'm a liberal - etc etc etc until eternity. It's not just shorthand, it's misleading. I refuse to use these labels these days because they are empty.

So, to answer your question - I don't know the difference between liberal and progressive because that distinction is so blurred it is beyond recognition.

i fail to see how one could be liberal in their thinking and not be progressive also.The whole basis of liberal to me means new and different ideas to approach the problems we face. The republicans do not wish to rock the boat because it means spending money, being regulated and held responsible for the outcome.The dems have their problems and are no saints but they are all we have to work with. The Obama's were a great lift on politics. It is sad the republicans sabotaged his administration . We must make sure that the next dem has a better chance to save our government from the pall the republicans have levied upon us.

A true liberal is naturally progressive. The definition from Brtianica - "Liberalism is a political view based on liberty and equality. Liberals generally support civil rights, democracy, secularism, gender equality, internationalism and the freedoms of speech, the press, religion and markets." For these beleifs to be realized progressivism is necessary, especailly in the face of conservative politics which fundametally resists these beliefs in favor of authority.

It depends on what part of the world you come from. Seriously. Politically I'm a very liberal person. I beleive in Democracy for all and equality of all. I cannot buy Trump and his "fake news" for a minute. He's a conman and a liar.
On the other hand I am personally conservative. My car is 14 years old but in excellent shape. I have low overhead and fix everything all the time if need be. I'm watching my money because if I gave it to you I would not have any. If you need $20 go to your momma, not me. I'm not the man to come to if you need a "small loan." I've also been flat broke before and have been around the block a few times. There's not a con that I don't know.
Should we do immigration and let in more people allowing them a chance at the American dream? Certainly. This is how America was made. We are the great melting pot.

Unfortunately Yes. Progressives are more liberal. And Liberals have refused to support a far left candidate (Sanders) even if they know it would be good for America. Sad.

Well, progressive seems to be more work!

In my mind, in the U.S., a

Liberal is someone who believes in open-minded approaches to different situations. (Gay marriage? Sure.) They may not be interested in seeking out solutions to problems, and especially not in finding problems to solve. While they are generally good people, this tends to manifest as attention to superficial details of issues (Trump and Stormy, OMG!) rather than digging into the systemic problem (Trump elected in spite of popular vote)

Progessive is someone who actively seeks social progress and betterment. These are the people who dig into issues to find the route cause (if they can), and are willing to tackle major systemic issues even if that necessitates major change (global warming is bad, lets revolutionize the energy industry!). Progressives tend to alienate people who move more slowly, especially conservatives, but sometimes liberals as well.

The two are not mutually exclusive, either. I would fall into both categories on most issues.

Why do we need to apply convenient labels to everything when one size does not fit all?

So here is my thought. I am scially extremely liberal. However, that liberalism is tempered by governmental fiscal conservativism. I am scared by the fact that very soon the federal budget will approach 100% of GDP. We must get of spending under control and everything needs to be under review but first and foremost is our military budget. It is insane. I'm a veteran and agree we need a strong military but we are buying tanks that the Army does not want just because they are made in a congressman's district. It has to stop. There are thousands more examples.

As long as it is left of Republicans and right of communism, l am pretty much OK with anything.

Outside the USA they are 2 distinct terms. One can be a liberal conservative as was Edmund Burke.
Free market capitalism is a liberal idea but one that progressives would like to see at least restrained and regulated. This is why Regan's Voodoo economics is named Neo-Liberalism. It's a revival of liberal economic ideas that first failed around the time the Dutch Tulip Bubble burst.
Unfortunately Conservatism has been hijacked by radical reactionary populist nativists. This is doubleplus ungood. We need a solid conservative (in the Burkean mold) presence in our gonvernments just as we need a strong, vocal progressive presence.
Equally unfortunate is the progressive side bowing to the Neo-liberal economic crap that has infested (by design) our various nations. Thatcher was quite explicit about using that system to reduce and subvert progressive policy.

Yes the spelling

Yes. I was liberal until I realized they didn't plan on doing anything about anything.

Modern liberalism, no. Classic liberalism, yes. Classic liberals are all about individual freedom, such as those acknowledged in the Bill of Rights, and also advocate limited government. Modern liberals, not so much. Many modern liberals advocate "democratic socialism," which limits freedom, requires an invasive government, and is more akin to progressive ideals.

I am not a conservative, period. Does that make me a "liberal" by default? I consider myself a progressive. That being said, I do not agree with many liberals and conservatives on many issues so I do not know which is my category. That is to me one of the reasons I hate about labels. One thing I know for sure and I am open to it and that is that I am not a christian and do not believe in a being that is observing me from the clouds passing judgement on what I do, otherwise known as God.

As I understand it:

Liberalism- the position of less government involvement in people's personal lives. This is why liberals tend to be pro-choice, promote lgbt rights, are tollerant of immigrants, are in favor of decriminalizing recreational drugs, etc.

Progressive- the position of trying to modernize the nation, and reform it's systems to better suit the current age. As opposed to traditionalism.

The two often go hand in hand, but could technically be separate.

I had looked up something the other day and it was talking about society being controlled by the government and referred to it as a liberal stance. Think that less government control and abolishing the control senate and congress has would be more of a progressive society. The presidency eliminated and a council to replace that office representing all political ideas. To reexamine all the laws and to make the constitutions into a more modern document.

I like to call myself a Progressive. I'm for Progress in getting Gov't to work for the common man ...the poor and middle class working people. The Republicans and the Liberals appear to have sold themselves into working for the interests of the rich and connected.

I think liberal and progressive go hand in hand. A conservative and progressive are a contradiction in terms.

I find this interesting as a student of such things and a European (for now..any Irish ladies quite welcome to drag me off and marry me for love and the green passport).
For us, the Democrats are right wing with the Republicans being extreme right wing bordering on Fascist.
Where is the Socialist side of America? Don't confuse Socialism with Communism, though I'm sure users of this site wouldn't.

No, not really.