coarse vs uncouth

coarse and uncouth both are adjectives.

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

As adjectives, coarse and uncouth are synonyms defined as:

Other synonyms of coarse include common, rough-cut, vulgar.

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