羽毛|うもうumou[0]heiban (flat)

1. nounfeather; plume; plumage; down
   雄おすのくじゃくは尾おの羽毛うもうが色彩しきさい豊ゆたかである。↗

   The male peacock has colorful tail feathers.

• Synonym羽はねNeutralThe most common word: individual feathers, and also wings or fan blades. 「羽毛」 leans toward feathers as a whole, as in 「羽毛布団」.
• SynonymフェザーNeutralLoanword for feather, met mostly in product names, hairstyles and decoration rather than everyday talk, where 「羽」 or 「羽毛」 is the usual word.
• Related綿毛わたげNeutralFine, cotton-like fluffy fuzz; also the fluff on dandelion seeds. 「羽毛」 refers specifically to bird feathers and down.
• Related鳥毛とりげNeutralFeathers on a bird's body, also the decorative feathers on a spear sheath. Rarely used; say 「羽」 or 「羽毛」 instead.

For a single feather or a wing, use 「羽」; for down products or feathers as a whole, 「羽毛」; for fluffy fine fuzz, 「綿毛」. 「フェザー」 shows up mostly in product names, hairstyles and decoration, and 「鳥毛」 is rare.

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

1. 鳥とりの柔やわらかな綿毛わたげ。