Is "cant" a spelling or grammar mistake?
I know using "where" instead of "were" and similar mistakes are grammatical errors. But is using "cant" instead of "can't"? Why is it one rather than the other?
EDIT: I was not aware when writing this that "cant" was a word on it's own. My question is that if it weren't would the mistake be spelling or grammar. For example if you write down "werent" instead of "weren't".