chapter vs guild

chapter and guild both are nouns.

Word	Noun	Adjective	Verb	Adverb
chapter	Yes	No	No	No
guild	Yes	No	No	No

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

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

chapter (noun)	guild (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