Branches of linguistics. Synchronic vs diachronic approaches to the language study. Lexicology – ‘the science of the word’ Lexicon

The interrelation of lexical valency and polysemy:

-the restrictions of lexical valency of words may manifest themselves in the lexical meanings of the polysemantic members of word-groups, e.g. heavy, adj. in the meaning ‘rich and difficult to digest’ is combined with the words food, meals, supper, etc., but one cannot say *heavy cheese or *heavy sausage;

-different meanings of a word may be described through its lexical valency, e.g. the different meanings of heavy, adj. may be described through the word-groups heavy weight / book / table; heavy snow / storm / rain; heavy drinker / eater; heavy sleep / disappointment / sorrow; heavy industry / tanks, and so on.

From this point of view word-groups may be regarded as the characteristic minimal lexical sets that operate as distinguishing clues for each of the multiple meanings of the word.