皮膚|ひふhifu[1]atamadaka (head-high)

1. nounskin
   日光にっこうは皮膚ひふに作用さようする。↗

   The sunbeam acts upon the skin.

• Synonym肌はだNeutral「肌」 is skin and complexion, mostly in beauty and touch contexts (「肌が荒れる」); 「皮膚」 is the more medical, physiological term.
• Synonym皮かわNeutral「皮」 is the skin of animals and plants (「みかんの皮」「牛の皮」); its range is broad and not limited to human skin.
• SynonymスキンNeutralLoanword for skin, also a software skin; often appears in skincare product names (「スキンケア」).
• Related外皮がいひWrittenWritten, formal term for an outer skin or husk; mostly used in biology.

For medical or physiological skin, use 「皮膚」 (as in 「皮膚科」); for beauty and touch, 「肌」; for animal and plant skins, 「皮」; for skincare products, 「スキン」.

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

1. 動物どうぶつの器官きかんのひとつで、体からだの表面ひょうめんを覆おおっている層そう。体からだの内外ないがいを区切くぎり、その境さかいをなす。