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Lexicology is the part of linguistics which studies words. This may include their nature and function as symbols,〔Willard Van Orman Quine, Word and Object, 1960.〕 their meaning, the relationship of their meaning to epistemology in general, and the rules of their composition from smaller elements (morphemes such as the English ''-ed'' marker for past or ''un-'' for negation; and phonemes as basic sound units). Lexicology also involves relations between words, which may involve semantics (for example, ''love'' vs. ''affection''), derivation (for example, ''fathom'' vs. ''unfathomably''), usage and sociolinguistic distinctions (for example, ''flesh'' vs. ''meat''), and any other issues involved in analyzing the whole lexicon of a languages. The term first appeared in the 1970s, though there were lexicologists in essence before the term was coined. Computational lexicology as a related field (in the same way that computational linguistics is related to linguistics) deals with the computational study of dictionaries and their contents. An allied science to lexicology is lexicography, which also studies words, but primarily in relation with dictionaries – it is concerned with the inclusion of words in dictionaries and from that perspective with the whole lexicon. Sometimes lexicography is considered to be a part or a branch of lexicology, but properly speaking, only lexicologists who actually write dictionaries are lexicographers. Some consider this a distinction of theory vs. practice. ==Etymology== The word "lexicology" derives from the Greek λεξικόν ''lexicon'', neut. of λεξικός ''lexikos'', "of or for words",〔(λεξικός ), Henry George Liddell, Robert Scott, ''A Greek–English Lexicon'', on Perseus Digital Library〕 from λέξις ''lexis'', "speech", "word"〔(λέξις ), Henry George Liddell, Robert Scott, ''A Greek–English Lexicon'', on Perseus Digital Library〕 (in turn from λέγω ''lego'' "to say", "to speak"〔(λέγω ), Henry George Liddell, Robert Scott, ''An Intermediate Greek–English Lexicon'', on Perseus Digital Library〕) and -λογία ''-logia'', "the study of", a suffix derived from λόγος ''logos'', amongst others meaning "speech, oration, discourse, quote, study, calculation, reason",〔(λόγος ), Henry George Liddell, Robert Scott, ''A Greek–English Lexicon'', on Perseus Digital Library〕 in turn also from λέγω. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「lexicology」の詳細全文を読む スポンサード リンク
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