Tone Languages vs. Pitch-Accent Languages
Pitch plays a role in the phonology of many languages, but not all pitch-using languages are tonal languages in the same sense. Linguists draw a careful distinction between full tonal languages—where pitch is lexically specified for every syllable—and pitch-accent languages, where pitch highlights one prominent syllable per word but does not independently specify the pitch of every syllable. The difference has significant theoretical consequences and explains why Japanese and Mandarin sound so different despite both using pitch contrastively.
Full Tone Languages
In a full tonal language like Mandarin, Vietnamese, or Yoruba, each syllable carries an independently specified tone. Changing the tone on any syllable changes its meaning. Vietnamese distinguishes six tones; Cantonese has six to nine depending on the analysis; many Bantu languages use two contrastive levels (high and low). Every morpheme is marked for tone in the mental lexicon of the speaker. Explore tonal systems in depth on our tonal languages feature page.
Pitch-Accent Languages
Pitch-accent languages include Japanese, Ancient Greek, Serbian, and some Norwegian and Swedish dialects. In these languages, a word typically has a single accented mora or syllable whose pitch is specified, and the pitch of all other syllables is predictable by rule. Japanese has a binary distinction—a syllable is either accented or unaccented—and the position of the accent determines the pitch contour of the entire word. The Tokyo dialect word for 'chopsticks' /háshi/ differs from the word for 'bridge' /hashí/ and the word for 'edge' /hashi/ (no accent) by the position of this accent alone.
The difference matters practically for language learners. Learning a tonal language like Mandarin requires associating a tonal category with every single morpheme. Learning pitch accent in Japanese requires identifying the position of a single accent per word, which is cognitively different. Use our comparison page to see how the two systems manifest in the phoneme inventories and phonological descriptions of both languages.