noun, noun or participle which takes 'suru', intransitive verb
snowcap; snow-covered top; becoming topped with snow
Refers to snow covering the top of a mountain or similar peak. Often used as a noun or in suru-verb form to describe the state or process of being capped with snow.
富士山が冠雪した。
Mt. Fuji became capped with snow.
冠雪した山々が美しい。
The snow-capped mountains are beautiful.
積雪 refers to accumulated snow on the ground in general, while 冠雪 specifically describes snow covering the top of a mountain or peak.
Compound of 冠 (kan, 'crown' or 'cap') and 雪 (setsu, 'snow'), literally meaning 'crowned with snow'.