How many words start with KER?

10, from 5 letters up to 5. All of them are on this page.

What is the highest scoring word that start with KER?

KERKY at 16 points in Scrabble, and KERKY at 15 in Words With Friends, because the two games score the tiles differently.

KERBS, KEREL, KERFS, KERKY, KERMA, KERNE, KERNS, KEROS, KERRY, KERVE.

10 of them: KERBS, KEREL, KERFS, KERKY, KERMA, KERNE, KERNS, KEROS, KERRY, KERVE.

There are 10 of them. The highest scoring is KERKY at 16 points in Scrabble, and the set averages 11.0.

Most common words first, then the rest A to Z.

All of them: Word lists.