capacity unit vs capacity measure

capacity unit and capacity measure both are nouns.

Word	Noun	Adjective	Verb	Adverb
capacity unit	Yes	No	No	No
capacity measure	Yes	No	No	No

As nouns, capacity unit and capacity measure are synonyms defined as:

capacity unit and capacity measure: a unit of measurement of volume or capacity

capacity unit (noun)	capacity measure (noun)
a unit of measurement of volume or capacity	a unit of measurement of volume or capacity