川 / 皮 / 革
かわ
kawa
= river (川); skin/peel (皮); leather/hide (革)
Kawa is one of Japanese’s most productive homophones — the same sound written three different ways gives you a river, the skin of fruit or humans, and processed animal leather. Each has its own kanji, and learning all three at once is a useful vocabulary strategy because they come up constantly in daily life.
Kawa (かわ) has three main kanji forms. 川 (kawa, river): a major geographical feature — 川沿い (kawazoi, along the river), 川原 (kawara, dry riverbed), 川遊び (kawa asobi, playing in the river). Many of Japan’s most famous rivers incorporate 川 in their names: 隅田川 (Sumida-gawa), 荒川 (Ara-kawa). 皮 (kawa, skin/peel/rind): the outer covering of living things or fruits — りんごの皮 (ringo no kawa, apple peel), 皮膚 (hifu, skin — the medical/anatomical term), みかんの皮 (mikan no kawa, mandarin orange peel). 革 (kawa, leather/hide): processed animal skin — 革靴 (kawa-gutsu, leather shoes), 革財布 (kawa-saifu, leather wallet), 本革 (honkawa, genuine leather).
When Japanese people discuss geography or location, 川 (river) is essential: many cities and districts are named after rivers, and knowing whether a place name ends in 川 (-gawa or -kawa) or 河 (-kawa, a different kanji for larger rivers) helps with map reading. For skin care products and cosmetics, 皮膚 (hifu) is the formal medical term while 肌 (hada, skin surface/complexion) is more common in everyday beauty contexts. The distinction between 皮 (natural skin/peel) and 革 (processed leather) matters practically when shopping — 本革 (honkawa, genuine leather) on a product label indicates real leather.
川 is a pictograph of a flowing river — three vertical strokes representing water currents, making it one of the most visually intuitive kanji. It appears in compounds such as 川柳 (senryuu, a type of short comic poem — named after the willow trees by the Yanagawa river), and gives its shape to the related kanji 州 (su, sandbank/state). 皮 (hi/kawa) shows a hand peeling a hide. 革 (kaku/kawa) shows a stretched animal skin, specifically connoting processed leather as opposed to raw 皮.
Everyday use
川沿いを散歩するのが週末の楽しみです。
Kawazoi wo sanpo suru no ga shuumatsu no tanoshimi desu.
Taking a walk along the river is my weekend pleasure.
Casual / Social Media
このバッグ本革なの？かわいいけど高そう！
Kono baggu honkawa na no? Kawaii kedo takasou!
Is this bag genuine leather? It’s cute but looks expensive!
Formal / Cultural context
隅田川沿いには多くの歴史的な史跡が残っています。
Sumida-gawa zoi ni wa ooku no rekishiteki na shiseki ga nokotte imasu.
Many historical sites remain along the Sumida River.
Rivers (川, kawa) hold deep cultural significance in Japan as both practical resources and spiritual boundaries. In Shinto belief, rivers were considered sacred (神聖, shinsei) — inhabited by water deities (水神, suijin) and serving as purification spaces. The custom of misogi (禊, ritual water purification) in rivers or at the ocean connects flowing water to spiritual cleansing. Many major Shinto shrines are positioned near rivers for this reason. The Kamo River (鴨川) running through Kyoto has been a center of cultural life, leisure, and spiritual significance for over a millennium — its banks are where Kyoto citizens sit in couples at regular intervals, a custom so consistent it has been called a social phenomenon.
The term 川柳 (senryuu), a form of short humorous or satirical poetry similar to haiku, takes its name from the poet Karai Senryuu (柄井川柳, 1718–1790), whose surname contains 川 (river). Unlike haiku, senryuu do not require seasonal reference words and often deal with human behavior, social commentary, and wordplay — making them a particularly Japanese form of light verse that remains popular today in office competitions, newspaper columns, and online contests. This connection between a river-named poet and a beloved comic verse form illustrates how 川 has woven itself into the cultural fabric of Japanese literary history.