Nouns

(n)chaptera subdivision of a written work; usually numbered and titled“he read a chapter every night before falling asleep”
(n)chapterany distinct period in history or in a person's life“the industrial revolution opened a new chapter in British history”, “the divorce was an ugly chapter in their relationship”
(n)chaptera local branch of some fraternity or association“he joined the Atlanta chapter”
(n)chapteran ecclesiastical assembly of the monks in a monastery or even of the canons of a church
(n)chaptera series of related events forming an episode“a chapter of disasters”