Letters that make coarse-grained
s, a, o, d, e, g, n, c, r, i are letters that make 'coarse-grained'
Words within coarse-grained
oar, grain, arse, rain, ar, SE, ED, ain, coarse, in, AI, ai, RA, AR, CO, IN, NE, Ra, Ar, Co, In, Ne, Se are words within 'coarse-grained'