skydiver vs parachuter

skydiver and parachuter both are nouns.

Word	Noun	Adjective	Verb	Adverb
skydiver	Yes	No	No	No
parachuter	Yes	No	No	No

As nouns, parachuter is a hypernym of skydiver; that is, parachuter 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
parachuter: a person who jumps from aircraft using a parachute

Other hypernyms of skydiver include parachute jumper, parachutist.

skydiver (noun)	parachuter (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