hair (on the head)
頭髪が薄くなってきた。
My hair has been getting thinner.
頭髪をきれいに整えて面接に臨んだ。
I tidied my hair neatly and went to the interview.
病気の治療で頭髪が抜けてしまったが、回復後に戻った。
My hair fell out during treatment for an illness, but it came back after I recovered.