sandiness vs coarseness

sandiness and coarseness both are nouns.

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

As nouns, coarseness is a hypernym of sandiness; that is, coarseness is a word with a broader meaning than sandiness:

Other hypernyms of sandiness include graininess, granularity.

sandiness (noun)	coarseness (noun)
a texture resembling that of sand	looseness or roughness in texture (as of cloth)
The property of containing sand.	the quality of being composed of relatively large particles
	the quality of lacking taste and refinement
	language or humor that is down-to-earth