Лексикология английского языка

Answer these questions.

1. 
   What are the main ways of enriching the English vocabulary?
   
2. 
   What are the principal productive ways of word-building in English?
   
3. 
   What do we mean by derivation?
   
4. 
   What is the difference between frequency and productivity of affixes? Give examples.
   
5. 
   Give examples of your own to show that affixes have meanings.
   
6. 
   Prove that the words a finger and to finger (“to touch or handle with the fingers”) are two words and not one word finger used either as a noun or as a verb.
   
7. 
   What features of Modern English have produced the high productivity of conversion?
   
8. 
   Which categories of parts of speech are especially affected by conversion?