1) cuz is a slang word because and 'cause have no difference in meaning, but 'cause is a spoken version. cause is a noun and has nothing to do with because. 2) between two things among many things Hope my answer is useful)

CUZ is not an acceptable contraction of BECAUSE. Cuz is short for cousin. Cos, 'cos and 'cause are the only (unambiguous) acceptable contractions of BECAUSE.

"cause" can be an abbreviation of "because" but can also be a noun or a verb that have nothing to do with because. "Cuz" is like cause in the meaning of because is written. I think "cuz" is used to distinguish the two meanings of cause (cuz is cause in the meaning of because and cause is a noun or a verb).