coarse vs coarseness

coarse is not a noun while coarseness is a noun.

Word	Noun	Adjective	Verb	Adverb
coarse	No	Yes	No	No
coarseness	Yes	No	No	No

coarse (noun)	coarseness (noun)
	looseness or roughness in texture (as of cloth)
	the quality of being composed of relatively large particles
	the quality of lacking taste and refinement
	language or humor that is down-to-earth

coarse (adjective)	coarseness (adjective)
of textures that are rough to the touch or substances consisting of relatively large particles
of low or inferior quality or value
lacking refinement or cultivation or taste