This article is intended to use the theory of prototype categories to illustrate the four ways of lexical change: generalization,specification,metaphor and semantic shift in terms of the interrelation of "words" and "categories".

This paper attempts to explore into lexical deviation and its rhetorical effect from the following aspects:affixation,compounding,partial tone,conversion,nonce meaning,and loanwords.

From the four aspects of nonce formation,nonce meaning,transformation of part of speech,unusual collocation,this thesis attempts to explore into lexical deviation and its stylistic effects with illustrations from the texts of Advanced English.

With adequate examples, this paper analyzes three forms of the lexical deviation used in advertising discourse, that is, parody, anagrammatical spelling and coinage.

The correlation between technological change and lexical change;

This corpus-based research studies lexical change of the standard written British English from late 1950s and early 1960s to the mid 1980s and mid 1990s.

But the internal lexical structure in English has not been disturbed by the lexical change which has lasted for centuries.