Thread:Chorus Kids/@comment-24577221-20170307050141/@comment-24577221-20170308180750

To be more precise, I should say that "fora" is the traditional plural of "forum", based in Latin. "Forums" is now popular, presumably because of people who didn't/don't know the original plural.

Sort of like there are now probably people who think that the plural of "cactus" is "cactuss".