Учебное пособие: Brief course on lexicology

There is every reason to exclude the shortening of words, lexicalization, blending, acronymy from the system of word-formation and regard them and other word-forming processes as specific means of vocabulary refreshment. Sound-and-stress interchange in Modern English are a means of distinguishing between different words, primarily between words of different pa5rts of speech.

The degree of productivity and factors favouring it make an important aspect in synchronic description of every derivational pattern within the 2 types of word-formation.

Three degrees of productivity are distinguished for derivational patterns and individual derivational affixes:

1. highly productive

2. productive or semi- productive

3. non- productive