- crevice, cranny, crack, fissure, chap - a long narrow depression in a surface
--1 is a kind of depression, impression, imprint
- crack, cleft, crevice, fissure, scissure - a long narrow opening
--2 is a kind of opening, gap
--2 has particulars:chap; chink; crevasse; fatigue crack; fault, geological fault, shift, fracture, break; rift; slit; split; vent, volcano; volcanic crater, crater