Ionization vs. Dissassociation

I'm very annoyed at my textbook.

It uses the terms ionization and dissassociation interchangably. I use
Zumdahl (5th ed).

It irks me mostly because ionization is a chemical change while
dissassociation is a physical change...by using the two words
interchangably you would assume that dissolving salt is a chemical
change simply because dissolving HCl (g) in water is a chemical change.
Or vice versa.

Am I just being nit-picky?

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