____is the smallest unit of language in terms of the relationship between expression and content, a unit that cannot be divided into further smaller units without destroying or altering the meaning, whether it is lexical or grammatical.
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Words could be divided into simple, compound and derived words on the____level.
Some important ways of word formation are____, derivation and conversion.
Morphology is the study of the ____structure of words and the ____by which words are formed.
Conjunctions, prepositions, articles and pronouns consist of relatively few words and have been referred to as____-class words since new words are not usually added to them.