periapsis vs perijove

periapsis and perijove both are nouns.

Word	Noun	Adjective	Verb	Adverb
periapsis	Yes	No	No	No
perijove	Yes	No	No	No

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

periapsis: (astronomy) the point in an orbit closest to the body being orbited
perijove: periapsis in orbit around Jupiter

Other hyponyms of periapsis include perigee, perihelion, perilune, periselene.

periapsis (noun)	perijove (noun)
(astronomy) the point in an orbit closest to the body being orbited	periapsis in orbit around Jupiter