cubic content unit vs cubic measure

cubic content unit and cubic measure both are nouns.

Word	Noun	Adjective	Verb	Adverb
cubic content unit	Yes	No	No	No
cubic measure	Yes	No	No	No

As nouns, cubic content unit and cubic measure are synonyms defined as:

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

Other synonyms of cubic content unit include capacity measure, capacity unit, cubage unit, cubature unit, displacement unit, volume unit.

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