Inflection refers to the change in the form of a word to express different grammatical features, such as tense, mood, voice, aspect, person, number, gender, and case. For example, in the English language, the verb “to walk” can change to “walked” to indicate past tense. This process helps convey more precise meanings in sentences, making communication clearer. In addition to verbs, nouns can also undergo inflection. For instance, the noun “cat” becomes “cats” when indicating more than one. Understanding inflection is essential for mastering languages like English, Spanish, or French, as it allows speakers to form correct and meaningful sentences.