bout vs period of time

bout and period of time both are nouns.

Word	Noun	Adjective	Verb	Adverb
bout	Yes	No	No	No
period of time	Yes	No	No	No

As nouns, period of time is a hypernym of bout; that is, period of time is a word with a broader meaning than bout:

Other hypernyms of bout include period, time period.

bout (noun)	period of time (noun)
an occasion for excessive eating or drinking	an amount of time
a contest or fight (especially between boxers or wrestlers)
(sports) a division of a game during which one team is on the offensive
a period of illness