Just a sciency word for categorizing things. There’s the science of Taxonomy – the study of classifying things – and also the individual noun meaning a way to categorize things. In common usage online, a “tag” is a taxonomy. A “category” is another one. Technically, in many databases the author is also a taxonomy, since it is a method of sorting the data. In our case, we have a wide array of tags and other filters that can be used in our search/filter view. If you do a search you’ll generally get a filter view with a header about that, if you click on a tag, you’ll get a ‘taxonomy’ view of all the matching games in the database.