Hierarchial Taxonomy Autocomplete

The Hierarchial Taxonomy Autocomplete module provides a way to distinctly select terms in a vocabulary when tagging content. For each term that matches by name, the hierarchy for that term is displayed in the drop down.

Note: This module is similar to "Hierarchical Term Reference Autocomplete". I am not sure if this module should be combined with "Hierarchical Term Reference Autocomplete" or if they should remain separate. Their UI and implementation differ. For the purpose of my current project, it made sense to create a standalone module.

https://www.drupal.org/project/term_ref_autocomplete