What is the definition for inflection?

Inflection is the change in the form of a word (typically a noun, verb, adjective, or adverb) to reflect grammatical features such as:

* Number: Singular vs. plural (e.g., cat vs. cats)

* Gender: Masculine, feminine, or neuter (e.g., king vs. queen)

* Case: Nominative, accusative, genitive, etc. (e.g., I vs. me)

* Tense: Present, past, future (e.g., walk vs. walked)

* Person: First, second, third (e.g., I walk vs. you walk)

* Mood: Indicative, subjunctive, imperative (e.g., I walk vs. I may walk)

* Degree: Comparative, superlative (e.g., good vs. better vs. best)

In other words, inflection is the process of modifying a word to indicate its grammatical function or meaning within a sentence.

Examples:

* Noun: "dog" (singular) vs. "dogs" (plural)

* Verb: "walk" (present tense) vs. "walked" (past tense)

* Adjective: "big" (positive degree) vs. "bigger" (comparative degree) vs. "biggest" (superlative degree)

Inflectional morphology is the study of how words change their form to reflect grammatical functions. It is a key aspect of many languages, including English, Spanish, German, and Latin.