"coarser" in the adjective sense
1. coarse, harsh
of textures that are rough to the touch or substances consisting of relatively large particles
"a coarse weave"
2. coarse, common, rough-cut, uncouth, vulgar
lacking refinement or cultivation or taste
"he had coarse manners but a first-rate mind"
"behavior that branded him as common"
"an untutored and uncouth human being"
"an uncouth soldier
3. coarse, common
of low or inferior quality or value
"of what coarse metal ye are molded"- Shakespeare
"produced...the common cloths used by the poorer population"
Source: WordNet® (An amazing lexical database of English)
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