congress vs meeting

congress and meeting both are nouns.

Word	Noun	Adjective	Verb	Adverb
congress	Yes	No	No	No
meeting	Yes	No	No	No

As nouns, congress and meeting are synonyms defined as:

congress and meeting: the social act of assembling for some common purpose

Other synonyms of congress include coming together.

As nouns, meeting is a hypernym of congress; that is, meeting is a word with a broader meaning than congress:

Other hypernyms of congress include group meeting.

congress (noun)	meeting (noun)
the social act of assembling for some common purpose	the social act of assembling for some common purpose
a meeting of elected or appointed representatives	the act of joining together as one
a national legislative assembly	a casual or unexpected convergence
	a formally arranged gathering
	a small informal social gathering
	a place where things merge or flow together (especially rivers)