expanse vs space

expanse and space both are nouns.

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

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

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

As nouns, space is a hypernym of expanse; that is, space is a word with a broader meaning than expanse:

expanse (noun)	space (noun)
the extent of a 2-dimensional surface enclosed within a boundary	the unlimited expanse in which everything is located
a wide scope	(printing) a block of type without a raised letter; used for spacing between words or sentences
a wide and open space or area as of surface or land or sky	a blank character used to separate successive words in writing or printing
	a blank area
	one of the areas between or below or above the lines of a musical staff
	an area reserved for some particular purpose
	any location outside the Earth's atmosphere
	an empty area (usually bounded in some way between things)
	the interval between two times

expanse (verb)	space (verb)
	place at intervals