noun
A roof covered with traditional Japanese clay tiles (瓦). Common in older Japanese architecture and temples.
この寺の瓦屋根はとても美しい。
The tiled roof of this temple is very beautiful.
屋根 is a general term for roof, whereas 瓦屋根 specifies a roof made of tiles.
Compound of 瓦 (kawara, 'roof tile') and 屋根 (yane, 'roof').