unmerciful vs inclement

unmerciful and inclement both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unmerciful	No	Yes	No	No
inclement	No	Yes	No	No

unmerciful (adjective)	inclement (adjective)
having or showing no mercy	used of persons or behavior; showing no clemency or mercy
	(of weather or climate) severe