Endangered Species

endangered (a) 瀕臨絕種
endangered species 瀕臨絕種的生物

extinct (a)
1.絕種; 2.已經熄滅的
(口語)絕種，可用 die out
ex: The dinosaur died out millions of years ago.

2. an extinct volcano 死火山

extinguish(v) 熄滅
ex: Please extinguish your cigarette.