Noun and の adjective
やさい
どんなにお腹が苦しくても、野菜なら食べられます。
No matter how full I am, I can eat vegetables.
A field vegetable is still a vegetable, whether it comes from the field or not.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.