Vocabulary consisting only from characters you are able to read
The angle A has 60 degrees.math
第三者
だいさんしゃ
third party/third person/outsider/disinterested person/(P)leda1
交代
こうたい
alternation, change, relief, relay, shift, substitution (sports, etc.)suru
歯石
しせき
dental calculus (calcified deposits that accumulate on the teeth), tartar (of the teeth)mix