Dictionary.com defines a lexeme as a lexical unit in a language, as a word or base. Further a vocabulary item.
Merriam-webster.com on the other hand defines lexical as pertaining or relating to words or the vocabulary of a language as distinguished from its grammar and construction.
Sense is defined as “a meaning conveyed or intended, especially one of a set of meanings a word or phrase may have/bear.”
Relation is an existing connection; a significant association between or among things.
Lexical sense relations are therefore the relationships between meaning of words, in either their similarity or contrast in a language. It (Lexical sense relations) is used in lexical semantics to t describe the relationship between terms (words), as Semantics largely deals with word meaning.
INTRODUCTION Lexical sense relations exist in the English language in different spheres. Lexical/semantic field organizes words and expressions into a system which shows their relationship within one another. Thus, angry, sad, afraid and depressed, is a set of words in a lexical field that shows emotions. Lexical semantics therefore examines relationship among word meanings. It studies organisation of the lexicon (vocabulary:-word and expressions of a language) and how the lexical meanings of lexical items are interrelated, and its principal goal is to build a model for the structure of the lexicon by categorizing the types of relationships between words. The relationships include such broad classes as hyponymy, homonymy, polysemy, synonymy, antonymy as well as metonymy.
HYPONYMY
Hyponymy involves the logical relationship of entailment; sense of one word is included in (hypo 'under') the sense of the other. It also involves the notion of class inclusion. For instance, the meaning of “animal” is included in the meaning of lion, goat, dog and so on. The term “animal” is the upper term known as the SUPERORDINATE while the lower term is called the HYPONYM.
Superordinate
Bibliography: www.buzzle.com www.en.wiktionary.org www.dictionary.com www.glottopedia.de www.merriam-webster.com 1982, The World Book Encyclopedia, S Vol. 17: Childcraft International Inc. Chicago www.wikipedia.org