What It Scores
YUNX is a valid word in the tournament list this site uses. Tile values only, before any premium square: 14 in Scrabble and 15 in Words With Friends. The letters break down as Y4 U1 N1 X8.
Words Made From The Letters In YUNX
5 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.
2 letter words (5)
Longer Words Containing YUNX
YUNX 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.