shape

凸: convexity

煙突: chimney, smokestack

mirror

convex

to collide into, to collide with / to have a conflict with someone / (of opinions) to conflict

(biochemistry) mutation

a mirror (smooth reflecting surface) / Short for 鏡餅 (kagami mochi): a set of mochi rice cakes used in New Year celebrations / Short for 鏡物 (kagamimono):

mirror / speculum / pattern, model, example

a female given name / a surname