niger-kordofanian: the family of languages that includes most of the languages spoken in Africa south of the Sahara; the majority of them are tonal languages but there are important exceptions (e.g., Swahili or Fula)
natural language: a human written or spoken language used by a community; opposed to e.g. a computer language
scomberomorus maculatus: a large commercially important mackerel of the Atlantic coastal waters of North America