chapter vs social club

chapter and social club both are nouns.

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

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

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

chapter (noun)	social club (noun)
a subdivision of a written work; usually numbered and titled	a formal association of people with similar interests
a series of related events forming an episode
a local branch of some fraternity or association
an ecclesiastical assembly of the monks in a monastery or even of the canons of a church
any distinct period in history or in a person's life