Catalan is split in two major dialectal blocks: Eastern Catalan, and Western Catalan. The main difference lies in the <answer>treatment of unstressed a and e</answer>; which have merged to /ə/ in Eastern dialects, but which remain distinct as /a/ and /e/ in Western dialects. There are a few other differences in pronunciation, verbal morphology, and vocabulary.
What is the major difference between the two blocks?
treatment of unstressed a and e