In linguistics, declension (verb: to decline) is the changing of the form of a word, generally to express its syntactic function in the sentence by way of an inflection. Declension may apply to nouns, pronouns, adjectives, adverbs, and determiners. It serves to indicate number (e.g. singular, dual, plural), case (e.g. nominative, accusative, genitive, or dative), gender (e.g. masculine, feminine, or neuter), and a number of other grammatical categories. Inflectional change of verbs is called conjugation.
Declension is the process where words like nouns, pronouns, and adjectives change their form to show their grammatical role in a sentence—for example, whether they're singular or plural, or what case they're in (like nominative or accusative). This system of changing word forms helps readers and listeners understand the grammatical relationships between words and what function each word serves in a sentence.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).