Obsolete vs. Deprecated HTML

Question

What is the difference between the terms \"obsolete\" and \"deprecated\" with regards to HTML? I seem to be seeing a lot of elements being flagged as \"obsolete\" in HTML5..

Answer 1

The dictionary tells the story pretty well:

Deprecated: Express disapproval of.

Obsolete: No longer produced or used; out of date.

It is recommended that you don't use deprecated elements, because they will likely not be supported in the future, whereas obsolete elements have already been discontinued from use.