what is word formation
Word formation is sometimes contrasted with semantic change, which is a change in a single word's meaning.The boundary between word formation and semantic change can be difficult to define: a new use of an old word can be seen as a new word derived from an old one and identical to it in form (see conversion). blend is a word formed by joining parts of two or more older words. An example is smog, which comes from smoke and fog, or brunch, which comes from 'breakfast' and 'lunch'. Sub-categories of blending are: