meeting vs social function

meeting and social function both are nouns.

Word	Noun	Adjective	Verb	Adverb
meeting	Yes	No	No	No
social function	Yes	No	No	No

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

meeting: a small informal social gathering
social function: a formal or official social gathering or ceremony of people

Other hypernyms of meeting include affair, function, occasion, social affair, social gathering, social occasion.

meeting (noun)	social function (noun)
the social act of assembling for some common purpose	a formal or official social gathering or ceremony of people
the act of joining together as one
a casual or unexpected convergence
a formally arranged gathering
a small informal social gathering
a place where things merge or flow together (especially rivers)