Translation guide
In Japanese, the concept of a wild horse is most commonly expressed with the word 野生馬 (yaseiba), but there are also specific terms for feral horses and the native wild horses of Japan.
Referring to any horse living in the wild, not domesticated.
The standard term for a wild horse, combining 野生 (wild) and 馬 (horse).
あの草原には野生馬が生息している。
Wild horses inhabit that grassland.
A more literary or traditional term for a wild horse, often used in historical contexts.
野馬が平原を駆け抜ける。
Wild horses gallop across the plain.
Specifically a horse that was once domesticated but now lives wild, like mustangs.
Literally 'horse that has become wild', used for feral horses.
アメリカには野生化した馬が多くいる。
There are many feral horses in America.
Referring to the native wild horses of Japan, such as the Misaki or Noma horses.
Term for native Japanese horse breeds, some of which live in semi-wild conditions.
御崎馬は日本在来馬の一種です。
The Misaki horse is a type of native Japanese horse.
A specific breed of wild horse found in Cape Toi, Miyazaki.
都井岬で御崎馬を見ることができます。
You can see Misaki horses at Cape Toi.
A rare breed of small horse from Noma, Hiroshima, often considered a wild horse.
野間馬は広島県の天然記念物です。
The Noma horse is a natural monument of Hiroshima Prefecture.
In Japanese, 野生馬 (yaseiba) can refer to both truly wild horses and feral horses. If you need to specify a feral horse (once domesticated), use 野生化した馬 (yaseika shita uma).