Hypernymy and hyponymy

Hypernymy and hyponymy are the semantic relations between a generic term (hypernym) and a specific instance of it (hyponym). The hypernym is also called a supertype, umbrella term, or blanket term. The hyponym is a subtype of the hypernym. The semantic field of the hyponym is included within that of the hypernym. For example, pigeon, crow, and hen are all hyponyms of bird and animal; bird and animal are both hypernyms of pigeon, crow, and hen.