supper vs social function

supper and social function both are nouns.

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

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

supper: a social gathering where a light evening meal is served
social function: a formal or official social gathering or ceremony of people

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

supper (noun)	social function (noun)
a light evening meal; served in early evening if dinner is at midday or served late in the evening at bedtime	a formal or official social gathering or ceremony of people
a social gathering where a light evening meal is served