Knowra Word stem Word stem A word stem is the form to which an inflectional or derivational affix attaches. It may be a complete word or a bound form, and can differ from the root.
Root (linguistics) : The smallest lexical element in a word, carrying its core meaning and serving as the source of related forms. A stem may consist of a root alone or combine a root with other material.
Allomorph : One of the distinct phonological forms that a morpheme takes in different linguistic environments. A stem may have different forms across related words or grammatical contexts.
Word root : The core lexical element from which a word is built, excluding attached affixes. A stem can contain more material than the root, especially after derivation.
Stemming : A text-processing method that reduces related word forms to a common stem, often by removing affixes. Stemming algorithms use simplified stem forms to group word variants.
Affix : A bound morpheme attached to a base, root, or stem, such as a prefix or suffix. Affixes attach to stems to form inflected or derived words.
Stem alternation : A change in a stem's form across inflected or derived forms of a lexeme. Alternations show that a stem need not remain phonologically identical after affixation.
Lemmatization : The process of mapping inflected word forms to their dictionary headwords, or lemmas. A lemma is a citation form, whereas a stem is a morphological base for affixation.
Lemmatization in natural language processing : A language-processing task that identifies a word's lemma using linguistic or statistical information. Lemmatizers distinguish dictionary forms from stems used in morphological analysis.
Base (morphology) : A form to which an affix attaches in a particular morphological operation. Base and stem overlap, but base names the input to an operation more broadly.
Concatenative morphology : Morphology that forms words by arranging morphemes in a linear sequence. Many stems combine with affixes through straightforward sequencing.
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