How can I restrict tags to be inserted free and only allowing to be inserted from existing tags in Drupal 7

If a user posts something then he can insert also a tag. The problem is, that some people give curious or wrong tag names. I would like to prevent this behavior in the way I am restricting the free insert of tags. The system should run an autocomplete function. And if the tag is not available then the user should be not able to create the post. In this case, he can only insert a tag recommendation to be added to the index. Is there a module for Drupal 7 which covers the required functionality?

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