the vowel u has two sounds as in put and cut. the grammarians have fixed pronunciation and in english spelling does not correspond with pronunciation.
The question would be easier to answer if you put it in a whole word. "Ook" can be pronounced differently in differently words, for instance, as in "book" and "spook" they are pronounced differently and would rhyme with different words.
A word that is spelled the same but pronounced differently is called a heteronym.
'Truman', but pronounced differently
Same word, but pronounced differently....it is pronounced Dino'zar.
A word that is spelled differently but pronounced the same is called a homophone. Examples include "right" and "write," or "bare" and "bear."
They are homophones.
They're spelt and pronounced differently
Aer It is pronounced the same just spelled differently.
It's just tornado but pronounced differently
A homonym of "wee" is "we." They are spelled differently but pronounced the same.
jablko ( "j" is pronounced differently; as "yablko")