Dissociation and ionization

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Why we always say that acid dissociates in water while bases ionizes in water
knowing that both gives ions?
What is the difference between dissociation and ionization in this field?
 

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Borek
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Borek
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One site is not a proof that "we ALWAYS say" something.

As far as I am aware in this context "dissociation" and "ionization" are often used interchangeably, and neither has a distinct meaning.

To some extent it makes a bit more sense to speak about ionization of NH3 than about dissociation, as it reacts with water producing ion but doesn't dissociate per se (as opposed to the acetic acid for example). But there is no rigor in using these terms.
 

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