Stry of higher and secondary specialized education of the republic of uzbekistan ferghana state university

4.1. Derivation and inflection
Derivation can be contrasted with inflection, in that derivation can produce a new word (a distinct lexeme) but isn't required to change this, whereas inflection produces grammatical variants of the same word. Generally speaking, inflection applies in more or less regular patterns to all members of a part of speech (for example, nearly every English verb adds -s for the third person singular present tense), while derivation follows less consistent patterns (for example, the nominalizing suffix -ity can be used with the adjectives modern and dense, but not with open or strong). However, it is important to note that derivations and inflections can share homonyms, that being, morphemes that have the same sound, but not the same meaning. For example, when the affix -er, is added to an adjective, as in small-er, it acts as an inflection, but when added to a verb, as in cook-er, it acts as a derivation. As mentioned above, a derivation can produce a new word (or new part of speech) but is not required to do so. For example, the derivation of the word "common" to "uncommon" is a derivational morpheme but doesn't change the part of speech (adjective).
An important distinction between derivational and inflectional morphology lies in the content/function of a listeme[clarification needed]. Derivational morphology changes both the meaning and the content of a listeme, while inflectional morphology doesn't change the meaning, but changes the function.
A non-exhaustive list of derivational morphemes in English: -ful, -able, im-, un-, -ing, -er
A non-exhaustive list of inflectional morphemes in English: -er, -est, -ing, -en, -ed,-s
4.2. Derivation and other types of word formation
Derivation can be contrasted with other types of word formation such as compounding. For full details see Word formation. Note that derivational affixes are bound morphemes – they are meaningful units, but can only normally occur when attached to another word. In that respect, derivation differs from compounding by which free morphemes are combined (lawsuit, Latin professor). It also differs from inflection in that inflection does not create new lexemes but new word forms (table → tables; open → opened).