This document discusses sense relations and semantic types of word relationships. It defines sense relation as the connection between the meanings of words. There are six main types of sense relations: synonymy, polysemy, hyponymy, homonymy, meronymy, and antonymy. Synonymy refers to words with similar meanings. Polysemy involves words with multiple meanings. Hyponymy describes a generic word and more specific examples. Homonymy are words with the same pronunciation or spelling but different meanings. Meronymy is the relationship between a part and whole. Antonyms are words with opposite meanings. The document provides examples to illustrate each sense relation type.