social gathering vs social function

social gathering and social function both are nouns.

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

As nouns, social gathering and social function are synonyms defined as:

social gathering and social function: a formal or official social gathering or ceremony of people

Other synonyms of social gathering include affair, function, occasion, social affair, social occasion.

social gathering (noun)	social function (noun)
a formal or official social gathering or ceremony of people	a formal or official social gathering or ceremony of people