For understanding anonymity, it is quite important to know the terminology of anonymity. Pseudonymity, unlinkability, undetectability and unobservability are the most relevant terms which need to be well understood. Since 2000, Martin Hansen and Prof. Pfitzmann have been working on the terminology document of anonymity and explain all important terms, their relations and differences with examples and known mechanisms to achieve anonymity and the others.  The last version can be downloaded from this link. And the history of the terminology can be followed here.

The document contains also translations of many anonymity-relevant words into different languages. Turkish was missing and I translated that part into Turkish. It can be downloaded from here.

In the following, some definitions from the terminology are cited:
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