difficult vs tall

difficult is not a noun while tall is a noun.

Word	Noun	Adjective	Verb	Adverb
difficult	No	Yes	No	No
tall	Yes	Yes	No	No

difficult (noun)	tall (noun)
	a garment size for a tall person

difficult (adjective)	tall (adjective)
not easy; requiring great physical or mental effort to accomplish or comprehend or endure	great in vertical dimension; high in stature
hard to control	impressively difficult
	too improbable to admit of belief
	lofty in style
	having a specified height