A primary distinction exists between Eastern and Western Japanese. This is a long-standing divide that occurs in both language and culture. The map in the box at the top of this page divides the two along phonological lines. West of the dividing line, the more complex -type pitch accent is found; east of the line, the simpler Tokyo-type accent is found, though Tokyo-type accents also occur further west, on the other side of . However, this isogloss largely corresponds to several grammatical distinctions as well: West of the pitch-accent isogloss: