歯磨き【はみがき】
dental brushing, brushing one's teeth, dentifrice, toothpaste, tooth powder
研磨【けんま】
grinding, polishing, refining (a skill, knowledge, etc.), applying oneself (to study), disciplining oneself
達磨【だるま】
daruma, tumbling doll, round, red-painted good-luck doll in the shape of Bodhidharma, with a blank eye to be completed when a person's wish is granted, Bodhidharma, prostitute