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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 ...
Inflection of the Scottish Gaelic lexeme for 'dog', which is cù for singular, chù for dual with the number dà ('two'), and coin for plural. In linguistic morphology, inflection (less commonly, inflexion) is a process of word formation [1] in which a word is modified to express different grammatical categories such as tense, case, voice, aspect, person, number, gender, mood, animacy, and ...
For example, the difference between inflection and derivation can be stated in terms of lexemes: Inflectional rules relate a lexeme to its forms. Derivational rules relate a lexeme to another lexeme.
Informally, word formation rules form "new" words (more accurately, new lexemes), and inflection rules yield variant forms of the "same" word (lexeme). The distinction between inflection and word formation is not at all clear-cut. There are many examples for which linguists fail to agree whether a given rule is inflection or word formation.
Agglutinative languages have words containing several morphemes that are always clearly differentiable from one another in that each morpheme represents only one grammatical meaning and the boundaries between those morphemes are easily demarcated; that is, the bound morphemes are affixes, and they may be individually identified.
A morpheme is any of the smallest meaningful constituents within a linguistic expression and particularly within a word. [1] Many words are themselves standalone morphemes, while other words contain multiple morphemes; in linguistic terminology, this is the distinction, respectively, between free and bound morphemes.
Inflection changes the grammatical properties of a word within its syntactic category. Derivational suffixes fall into two categories: class-changing derivation and class-maintaining derivation. Particularly in the study of Semitic languages, suffixes are called affirmatives, as they can alter the form of the words.
The relationship between an inflected form and its lemma is usually denoted by an angle bracket, e.g., "went" < "go". Of course, the disadvantage of such simplifications is the inability to look up a declined or conjugated form of the word, but some dictionaries, like Webster's Dictionary, list "went".