head
「頭」 has other readings with different meanings.
counter for large animals (e.g. head of cattle); counter for insects in a colle…
top of ...; head of ...
head; noggin
頭がずっと痛くてたまらない。
My head has been hurting terribly.
転んで頭をぶつけてしまった。
I fell and bumped my head.
日差しが強いから帽子を頭に被ればよかった。
The sun was strong so I should have put a hat on my head.