common measure vs common time

common measure and common time both are nouns.

Word	Noun	Adjective	Verb	Adverb
common measure	Yes	No	No	No
common time	Yes	No	No	No

As nouns, common measure and common time are synonyms defined as:

common measure and common time: a time signature indicating four beats to the bar

Other synonyms of common measure include four-four time, quadruple time.

common measure (noun)	common time (noun)
the usual (iambic) meter of a ballad	a time signature indicating four beats to the bar
an integer that divides two (or more) other integers evenly
a time signature indicating four beats to the bar