inevitable vs fatal

inevitable is a noun but fatal is not a noun.

Word	Noun	Adjective	Verb	Adverb
inevitable	Yes	Yes	No	No
fatal	No	Yes	No	No

inevitable (noun)	fatal (noun)
an unavoidable event

inevitable (adjective)	fatal (adjective)
incapable of being avoided or prevented	bringing death
invariably occurring or appearing	having momentous consequences; of decisive importance
	controlled or decreed by fate; predetermined
	(of events) having extremely unfortunate or dire consequences; bringing ruin