surface area vs erasure

surface area and erasure both are nouns.

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

As nouns, erasure is a hyponym of surface area; that is, erasure is a word with a more specific, narrower meaning than surface area:

surface area: the extent of a 2-dimensional surface enclosed within a boundary
erasure: a surface area where something has been erased

Other hyponyms of surface area include acreage, land area, footprint, blank space, place, space, space, balk, baulk, plane section, section.

surface area (noun)	erasure (noun)
the extent of a 2-dimensional surface enclosed within a boundary	deletion by an act of expunging or erasing
	a correction made by erasing
	a surface area where something has been erased