1 morphology: Morphology is a branch of grammer which studies the internal structure of words and the rules by which words are formed.

2 inflectional morphology: Inflectional morphology studies the inflections of word-formation.

3 derivational morphology: Derivational morphology is the study of word-formation.

4 morpheme: Morpheme is the smallest meaningful unit of language.

5 free morpheme: Free morpheme are the morphemes which are independent units of meaning and can be used freely all by themselces or in combination with other morphemes.

6 bound morpheme: Bound morphemes are the morphemes which cannot be used independently but have to be combined with other morphemes, either free or bound, to form a word.

7 root: A root is often seen as part of a word; it can never stand by itself although it bears clear,definite meaning; it must be combined with another root or an affix to form a word.

8 affix: Affixes are of two types: inflectional and derivational.

9 prefix: Prefix occur at the beginning of a word.

10 suffix: Suffixes are added to the end of the stems; they modify the meaning of the original word and in many cases change its part of speech.

11 derivation: Derivation affixes are added to an existing form to creat a word.Derivation can be viewed as the adding of affixes to stem to form nes words.

12 compounding: Like derivation, compounding is another popular and important way of forming new words in English. Compounding can be viewed as the combination of two or sometimes more than two words to creat new words.