髪|かみkami[2]odaka (tail-high)

1. nounhair (on the head)
   その洋服ようふくは彼女かのじょの赤あかい髪かみに合あう。↗

   That dress matches her red hair.

• SynonymヘアNeutralLoanword used mainly in hairdressing contexts and compounds such as 「ヘアスタイル」; it can also mean pubic hair, so it is not always interchangeable with 「髪」.
• Synonym髪の毛かみのけNeutralCommon in daily speech; it covers the whole head of hair and is the usual choice for a single strand, more so than 「髪」.
• Synonym頭髪とうはつWrittenWritten/formal word seen mainly in regulations and medical contexts, as in 「頭髪検査」; in casual talk 「髪」 is the more usual word.
• Synonym毛髪もうはつWrittenUsed mainly in medical and scientific writing; unlike 「髪」, it can also be a general term for human body hair.
• Synonym御髪おぐしFormalA formal honorific for someone else's hair, with an old-fashioned, elegant tone; rarely used in everyday speech.

For everyday use, 「髪」 or 「髪の毛」; to speak of a single hair, 「髪の毛」 is the usual choice. 「ヘア」 turns up in hairdressing contexts, 「頭髪」 and 「毛髪」 in regulations and medical or scientific prose, and 「御髪」 is a rare honorific.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （かみ）かみ、頭部とうぶを覆おおう体毛たいもう。