Refers to a hard projecting growth on an animal's head, including both horns and antlers depending on the animal.
The cow's horns were bigger than I expected.
鹿の角は毎年生え替わる。
A deer's antlers are replaced every year.
Everyday use for slender feeler-like projections, especially a snail's tentacles; the more technical word for insect antennae is often 触角.
カタツムリがつのを出した。
The snail stuck out its tentacles.
peak; horn-like projection
Used for a pointed shape resembling a horn; common in cooking in the phrase 角が立つ, meaning that whipped cream, egg whites, etc. form peaks.
生クリームを角が立つまで泡立てる。
Whip the cream until peaks form.
Even the fawn is starting to grow small antlers.
Whip the egg whites until stiff peaks form.
spiked helmet; horned helmet