intensifier vs deadly

intensifier is a noun but deadly is not a noun.

Word	Noun	Adjective	Verb	Adverb
intensifier	Yes	No	No	No
deadly	No	Yes	No	Yes

intensifier (noun)	deadly (noun)
a modifier that has little meaning except to intensify the meaning it modifies

intensifier (adjective)	deadly (adjective)
	exceedingly harmful
	extremely poisonous or injurious; producing venom
	involving loss of divine grace or spiritual death
	(of a disease) having a rapid course and violent effect
	causing or capable of causing death
	of an instrument of certain death

intensifier (adverb)	deadly (adverb)
	(used as intensives) excessively
	as if dead