coarseness vs granularity

coarseness and granularity both are nouns.

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

As nouns, coarseness and granularity are synonyms defined as:

coarseness and granularity: the quality of being composed of relatively large particles

Other synonyms of coarseness include graininess.

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