acreage vs surface area

acreage and surface area both are nouns.

Word	Noun	Adjective	Verb	Adverb
acreage	Yes	No	No	No
surface area	Yes	No	No	No

As nouns, surface area is a hypernym of acreage; that is, surface area is a word with a broader meaning than acreage:

acreage: an area of ground used for some particular purpose (such as building or farming)
surface area: the extent of a 2-dimensional surface enclosed within a boundary

Other hypernyms of acreage include area, expanse.

acreage (noun)	surface area (noun)
an area of ground used for some particular purpose (such as building or farming)	the extent of a 2-dimensional surface enclosed within a boundary