What It Scores
JOUK is a valid word in the tournament list this site uses. Tile values only, before any premium square: 15 in Scrabble and 18 in Words With Friends. The letters break down as J8 O1 U1 K5.
Words Made From The Letters In JOUK
4 shorter words come out of these tiles. On a board that matters more than the long play, because a short word on a premium square often beats a long one on plain squares.
3 letter words (1)
2 letter words (3)
Longer Words Containing JOUK
JOUK appears inside each of these, which is what makes it worth knowing as a hook.
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.