Homonymy and Polisemy
A lexeme is a conjunction of form and meaning. The form is fairly easy to determine: in writing it is a sequence of letters, in speech a sequence of phonemes. But meaning is more difficult to determine.
In homonyms, such as bank ‘a financial institution’ and bank ‘the edge of a stream,’ pronunciation and spelling are identical but meanings are unrelated. In other pairs, numerous in English, such as steak and stake, pronunciation is identical but spelling is different, reflecting the fact that the words were once different in their phonological form. English also has pairs of homographs, two words that have different pronunciations but the same spelling; for example, bow, rhyming with go and referring to an instrument for shooting arrows, and bow, rhyming with cow and indicating a bending of the body as a form of respectful greeting.
Lexicographers and semanticists sometimes have to decide whether a form with a wide range of meanings is an instance of polysemy or of homonymy. A polysemous lexeme has several(apparently) related meanings. The noun head, for instance, seems to have related meanings when we speak of the head of a person, the head of a company, head of a table or bed, a head of lettuce or cabbage. If we take the anatomical referent as the basic one, the other meanings can be seen as derived from the basic one, either reflecting the general shape of the human head or, more abstractly, the relation of the head to the rest of the body.
Dictionaries recognize the distinction between polysemy and homonymy by making a polysemous item a single dictionary entry and making homophonous lexemes two or more separate entries. Thus head is one entry and bank is entered twice. Producers of dictionaries often make a decision in this regard on the basis of etymology, which is not necessarily relevant, and in fact separate entries are necessary in some instances when two lexemes have a common origin. The form pupil, for example, has two different senses, ‘part of the eye’ and ‘school child.’ Historically these have a common origin but at present they are semantically unrelated. Similarly, flower and flour were originally ‘the same word,’ and so were the verbs to poach (a way of cooking in water) and to poach (‘to hunt [animals] on another person’s land’), but the meanings are now far apart and all dictionaries treat them as homonyms, with separate listing. The distinction between homonymy and polysemy is not an easy one to make. Two lexemes are either identical in form or not, but relatedness of meaning is not a matter of yes or no; it is a matter of more or less.
In homonyms, such as bank ‘a financial institution’ and bank ‘the edge of a stream,’ pronunciation and spelling are identical but meanings are unrelated. In other pairs, numerous in English, such as steak and stake, pronunciation is identical but spelling is different, reflecting the fact that the words were once different in their phonological form. English also has pairs of homographs, two words that have different pronunciations but the same spelling; for example, bow, rhyming with go and referring to an instrument for shooting arrows, and bow, rhyming with cow and indicating a bending of the body as a form of respectful greeting.
Lexicographers and semanticists sometimes have to decide whether a form with a wide range of meanings is an instance of polysemy or of homonymy. A polysemous lexeme has several(apparently) related meanings. The noun head, for instance, seems to have related meanings when we speak of the head of a person, the head of a company, head of a table or bed, a head of lettuce or cabbage. If we take the anatomical referent as the basic one, the other meanings can be seen as derived from the basic one, either reflecting the general shape of the human head or, more abstractly, the relation of the head to the rest of the body.
Dictionaries recognize the distinction between polysemy and homonymy by making a polysemous item a single dictionary entry and making homophonous lexemes two or more separate entries. Thus head is one entry and bank is entered twice. Producers of dictionaries often make a decision in this regard on the basis of etymology, which is not necessarily relevant, and in fact separate entries are necessary in some instances when two lexemes have a common origin. The form pupil, for example, has two different senses, ‘part of the eye’ and ‘school child.’ Historically these have a common origin but at present they are semantically unrelated. Similarly, flower and flour were originally ‘the same word,’ and so were the verbs to poach (a way of cooking in water) and to poach (‘to hunt [animals] on another person’s land’), but the meanings are now far apart and all dictionaries treat them as homonyms, with separate listing. The distinction between homonymy and polysemy is not an easy one to make. Two lexemes are either identical in form or not, but relatedness of meaning is not a matter of yes or no; it is a matter of more or less.
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