space vs expanse

space and expanse both are nouns.

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

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

Other hypernyms of space include area, surface area.

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

space: one of the areas between or below or above the lines of a musical staff
expanse: the extent of a 2-dimensional surface enclosed within a boundary

Other hypernyms of space include area, surface area.

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

space (noun)	expanse (noun)
the unlimited expanse in which everything is located	the extent of a 2-dimensional surface enclosed within a boundary
(printing) a block of type without a raised letter; used for spacing between words or sentences	a wide scope
a blank character used to separate successive words in writing or printing	a wide and open space or area as of surface or land or sky
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

space (verb)	expanse (verb)
place at intervals