Hyponymy refers to a hierarchical relationship between words where the meaning of one word is included within the meaning of another more general word. Examples of hyponymy relationships include animal/dog and vegetable/carrot. The more general word is called the superordinate, while words that share the same superordinate are called co-hyponyms, such as horse and dog both being co-hyponyms under the superordinate animal. Polysemy refers to words that have multiple related meanings, like head, foot, and run. Homonymy refers to words that are spelled and pronounced the same but have different unrelated meanings, such as bank, bat, and race.