starkness vs stark

starkness is a noun but stark is not a noun.

Word	Noun	Adjective	Verb	Adverb
starkness	Yes	No	No	No
stark	No	Yes	No	Yes

starkness (noun)	stark (noun)
an extreme lack of furnishings or ornamentation
the quality of being complete or utter or extreme

starkness (adjective)	stark (adjective)
	complete or extreme
	providing no shelter or sustenance
	severely simple
	devoid of any qualifications or disguise or adornment
	without qualification; used informally as (often pejorative) intensifiers

starkness (adverb)	stark (adverb)
	to the fullest degree