concourse vs coming together

concourse and coming together both are nouns.

Word	Noun	Adjective	Verb	Adverb
concourse	Yes	No	No	No
coming together	Yes	No	No	No

As nouns, coming together is a hypernym of concourse; that is, coming together is a word with a broader meaning than concourse:

Other hypernyms of concourse include meeting, merging.

concourse (noun)	coming together (noun)
a coming together of people	the social act of assembling for some common purpose
a wide hallway in a building where people can walk	the act of joining together as one
a large gathering of people