calendar month vs period of time

calendar month and period of time both are nouns.

Word	Noun	Adjective	Verb	Adverb
calendar month	Yes	No	No	No
period of time	Yes	No	No	No

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

calendar month: one of the twelve divisions of the calendar year
period of time: an amount of time

Other hypernyms of calendar month include period, time period.

calendar month (noun)	period of time (noun)
one of the twelve divisions of the calendar year	an amount of time

calendar month vs period of time

calendar month and period of time both are nouns.

Words related to "calendar month"

Words related to "period of time"