skydiver vs parachute jumper

skydiver and parachute jumper both are nouns.

Word	Noun	Adjective	Verb	Adverb
skydiver	Yes	No	No	No
parachute jumper	Yes	No	No	No

As nouns, parachute jumper is a hypernym of skydiver; that is, parachute jumper is a word with a broader meaning than skydiver:

skydiver: a person who jumps from a plane and performs various gymnastic maneuvers before pulling the parachute cord
parachute jumper: a person who jumps from aircraft using a parachute

Other hypernyms of skydiver include parachuter, parachutist.

skydiver (noun)	parachute jumper (noun)
a person who jumps from a plane and performs various gymnastic maneuvers before pulling the parachute cord	a person who jumps from aircraft using a parachute