Clarify the difference between 間違い and 違い


I thought that 違う{ちがう} means "to be difference" and 間違う{まちがう} mean "to be
mistaken". But i'm pretty sure I heard 違う used as "its mistake" or "it's not
right" in anime.

Also, a friend told me that in now people use 違う more to with mistake context.
Could you please help me clarify this?




You can interpret ちがう as "to be different from the correct one." Actually まちがう
is a portmanteau word(紛う{まがう}+ちがう). 紛うmeans "mistake". So as you know まちがう
have the meaning of mistaking.

