appellant vs litigator

appellant and litigator both are nouns.

Word	Noun	Adjective	Verb	Adverb
appellant	Yes	Yes	No	No
litigator	Yes	No	No	No

As nouns, litigator is a hypernym of appellant; that is, litigator is a word with a broader meaning than appellant:

Other hypernyms of appellant include litigant.

appellant (noun)	litigator (noun)
the party who appeals a decision of a lower court	(law) a party to a lawsuit; someone involved in litigation

appellant (adjective)	litigator (adjective)
of or relating to or taking account of appeals (usually legal appeals)