User blog comment:Brandon Rhea/Introducing Unification, FANDOM's next big initiative/@comment-1676371-20181003000916/@comment-32573398-20181004074840

Forums had a similar layout and user interface to the wiki itself and fully supported wikitext, HTML, templates, etc. Discussions, on the other hand, is a completely different UI and is a completely different experience to the wikis themselves, and does not support wikitext and so forth in the capacity that Forums did.