You have the inclusion backwards. Nationalism is a subset of patriotism, which includes the elevation of your country above others. You can be patriotic without downplaying/dismissing other countries.
Still arbitrary babbling here, bro. The words themselves have no objective material existence with any kind of nuance or distinction beyond whatever usage people make of them, or whatever they think they mean.
Daniel Webster used to roam the woods with a notebook and just write down words he found people using, spellings they gave to them, and whatever meanings they attached.
Today, Merriam-Webster is a freak of John Dewey educational philosophy, a sort of authoritanian manager of public discourse.
In this little debate, some folks are trying to smear Donald J. Trump for using a word, somehow, out of context with the dictionary, as a lot of people understand it and use. It is a dishonest intellectual exercise to force DJT into the Hitler box, and in fact a shamefully dishonorable exercise.
Donald J. Trump likes big buildings that pay good rents, and good-looking women. I dunno, maybe I'm wrong. I don't know the man.
I know some of his staff and cabinet folks tried to explain globalism or the New World Order to him, and he just said he didn't like it. He didn't fire them.
I believe he noticed how a lot of our politicians are not doing good business, and I think he figured it was hurting people here in the country that elected him President. I think he noticed how crowds respond to different things. I think he tries to find more stuff like that.
But I don't think he ever cared about "socialism", "nationalism", or any political isms you have ever heard about. I think he likes to do good business. I think he owns big buildings in other countries too. If he were President of the World, he would be trying to do stuff that makes practical good business.
But I really think he doesn't really care that much about being President. My wife fell in love with him many years ago when she saw a story about how he went with his wife to Target to get Christmas presents for his kids. Some folks thought it was unclassy for someone that rich to go shopping at Target. My wife said he was awesome because he really didn't care what anyone thought, and he was willing to shop the bargains and stay on budget/.
When Trump is no longer President, there will be no Fourth Reich left doing skyscraper drape Trump images calling him the Hero of the People or the Great Teacher or Great Leader. There will be no death camps where anyone was tortured and re-educated to conform to the Grand State.
Trump will be going back to Target looking for good deals for Christmas./
All that other stuff is what it would have been if we had elected Hillary.