文档介绍：Classification of English Words
According to Different Criteria
A. By origin: native words and loan words
Words of Anglo-Saxon origin or of Old English are native words, while those borrowed from other languages are loan words or borrowed words.
The fundamental features of the basic word stock are:
National character
Stability
Word-forming ability
Ability to form collocations
B.   By level of usage
Common words
Literary words
Archaic words
Poetical words
Colloquial words
Slang words
Technical words
C. By notion
Function words
Content words