apolune vs apoapsis

apolune and apoapsis both are nouns.

Word	Noun	Adjective	Verb	Adverb
apolune	Yes	No	No	No
apoapsis	Yes	No	No	No

As nouns, apoapsis is a hypernym of apolune; that is, apoapsis is a word with a broader meaning than apolune:

apolune: apoapsis in orbit around the moon
apoapsis: (astronomy) the point in an orbit farthest from the body being orbited

Other hypernyms of apolune include point of apoapsis.

apolune (noun)	apoapsis (noun)
apoapsis in orbit around the moon	(astronomy) the point in an orbit farthest from the body being orbited