Holonymy is the opposite of meronymy. These lexical entries are interconnected with semantic relations, such as hyperonymy, hyponymy, meronymy, or troponymy. Semantic relations between words are of many kinds, for example homonymy, antonymy, meronymy, and paronymy. A meronymy can also be considered a partial order. Some semantic relations between these synsets are meronymy, hyponymy, synonymy, and antonymy. In knowledge representation languages, meronymy is often expressed as "part-of".