Verbal error is not confined to single words. Individual terms may be clear while their composition or separation alters the proposition expressed.
A pronoun may be assigned the wrong antecedent; properties true separately or in different respects may be attributed jointly in the same respect; or a predicate of a whole may be assigned to each part.
The question is always which logical proposition the sentence actually expresses, and what additional assertion is being smuggled in by an altered grouping.