In dnd 2024 every character knows common and 2 standard languages.

A rogue ability grants to the rogue the knowledge of the “thieves’ cant” and allows to select a language from the rare languages table.

I don’t understand if these 2 new rare language add to the first 3, making every rogue start with at least 5 languages, or if you just replace the two standard languages with “thieves’ cant” and another rare language.

Any suggestion on the proper rule interpretation? Also I have similar questions for druid and ranger abilities that grant new languages.