R. S. Ginzburg, S. S. Khidekel, G. Y. Knyazeva, A. A. Sankin a course in modern english

§ 37. Summary and Conclusions

1. Compound words are made up of two ICs, both of which are derivational bases.

2. The structural and semantic centre of a compound, i.e. its head-member, is its second IC, which preconditions the part of speech the compound belongs to and its lexical class.

3. 
   Phonetically compound words are marked by three stress patterns — a unity stress, a double stress and a level stress. The first two are the commonest stress patterns in compounds.
   
4. 
   Graphically as a rule compounds are marked by two types of spelling — solid spelling and hyphenated spelling. Some types of compound words are characterised by fluctuations between hyphenated spelling and spelling with a space between the components.
   
5. 
   Derivational patterns in compound words may be mono- and polysemantic, in which case they are based on different semantic relations between the components.
   
6. 
   The meaning of compound words is derived from the combined lexical meanings of the components and the meaning of the derivational pattern.
   

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7. Compound words may be described from different points of view:

1. 
   According to the degree of semantic independence of components compounds are classified into coordinative and subordinative. The bulk of present-day English compounds are subordinative.
   
2. 
   According to different parts of speech. Composition is typical in Modern English mostly of nouns and adjectives.
   
3. 
   According to the means by which components are joined together they are classified into compounds formed with the help of a linking element and without. As to the order of ICs it may be asyntactic and syntactic.
   
4. 
   According to the type of bases compounds are classified into compounds proper and derivational compounds.
   
5. 
   According to the structural semantic correlation with free phrases compounds are subdivided into adjectival-nominal compound adjectives, verbal-nominal, verb-adverb and nominal compound nouns.
   

8. Structural and semantic correlation is understood as a regular interdependence between compound words and variable phrases. A potential possibility of certain types of phrases presupposes a possibility of compound words conditioning their structure and semantic type.

VI. Etymological Survey of the English Word-Stock