coarse vs vulgar

coarse and vulgar both are adjectives.

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

As adjectives, coarse and vulgar are synonyms defined as:

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

coarse (adjective)	vulgar (adjective)
of textures that are rough to the touch or substances consisting of relatively large particles	conspicuously and tastelessly indecent
of low or inferior quality or value	of or associated with the great masses of people
lacking refinement or cultivation or taste	lacking refinement or cultivation or taste
	being or characteristic of or appropriate to everyday language