appellant vs appellate

appellant is a noun but appellate is not a noun.

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

As adjectives, appellant and appellate are synonyms defined as:

appellant and appellate: of or relating to or taking account of appeals (usually legal appeals)

appellant (noun)	appellate (noun)
the party who appeals a decision of a lower court

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