A personal pronoun is a person form that cannot cooccur with a conominal.
When a person form can cooccur with a conominal, it is called "cross-index", and when it must cooccur with it, it is called "gramm-index". When a personal pronoun is a bound person form (i.e. a person index), it can be called "pro-index".
personal pronoun (CXN) = a linguistic form used for contextual reference to a person in terms of their role in the speech act event. Example: I is a pronoun that refers to a person in terms of their role as speaker in a speech event. (Section 3.1)