expanse vs erasure

expanse and erasure both are nouns.

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

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

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

expanse (noun)	erasure (noun)
the extent of a 2-dimensional surface enclosed within a boundary	deletion by an act of expunging or erasing
a wide scope	a correction made by erasing
a wide and open space or area as of surface or land or sky	a surface area where something has been erased