In Indonesian and Bahasa Malaysia there are different meanings of the same word, though both languages are derived from the language of the Malay language. This can lead to misunderstandings between citizens of Malaysia and Indonesia in the communicating. The question that arises is how to form words meaning the difference between Indonesian and Bahasa Malaysia? This study is a qualitative research that produces descriptive data barupa words written or spoken about the observed behavior. The morphological differences were found present in the sound (phoneme), the form of words (morphemes), and meaning (semantics) of a word. This difference can be grouped to (a) the words have similar sounds and form words but have different meanings, such a...