它们是不同的后缀 形容词后缀有很多名词变形容词:
1.名词后加-y, 如:
luck→lucky, cloud→cloudy; wind→windy; rain→rainy;
sun→sunny, snow→snowy noise-noisy health→healthy
2.在名词后加-ly, 如:
friend→friendly love→lovely day→daily
3.方位名词加-ern,如:
east→eastern west→western south→southern north→northern