jockey club vs social club

jockey club and social club both are nouns.

Word	Noun	Adjective	Verb	Adverb
jockey club	Yes	No	No	No
social club	Yes	No	No	No

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

Other hypernyms of jockey club include club, gild, guild, lodge, order, society.

jockey club (noun)	social club (noun)
a club to promote and regulate horse racing	a formal association of people with similar interests