reliever vs relieve

reliever is a noun but relieve is not a noun.

Word	Noun	Adjective	Verb	Adverb
reliever	Yes	No	No	No
relieve	No	No	Yes	No

reliever (noun)	relieve (noun)
a pitcher who does not start the game
someone who takes the place of another (as when things get dangerous or difficult)
a person who reduces the intensity (e.g., of fears) and calms and pacifies

reliever (verb)	relieve (verb)
	provide physical relief, as from pain
	provide relief for
	alleviate or remove (pressure or stress) or make less oppressive
	relieve oneself of troubling information
	grant exemption or release to
	lessen the intensity of or calm
	take by stealing
	free from a burden, evil, or distress
	save from ruin, destruction, or harm
	free someone temporarily from his or her obligations
	grant relief or an exemption from a rule or requirement to