area vs erasure

area and erasure both are nouns.

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

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

area (noun)	erasure (noun)
a part of a structure having some specific characteristic or function	deletion by an act of expunging or erasing
the extent of a 2-dimensional surface enclosed within a boundary	a correction made by erasing
a part of an animal that has a special function or is supplied by a given artery or nerve	a surface area where something has been erased
a subject of study
a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography)
a particular environment or walk of life