Vocabulary consisting only from characters you are able to read
画
かく
(n,n-suf) picture, drawing, painting, sketch; stroke (of a kanji, etc.); picture, drawing, painting, sketchcounter
家来
けらい
retainer, retinue, servantmix
Surface area of a circle is 2πr.math
人物
じんぶつ
character/personality/person/man/personage/talented man/(P)mix