What term refers to a person, place, or thing in grammar?

The correct term that refers to a person, place, or thing in grammar is a noun. Nouns are fundamental building blocks of sentences, serving as the names for specific objects, individuals, locations, or concepts. For instance, in the sentences "The cat is sleeping" or "New York is a bustling city," "cat" and "New York" are both nouns that identify specific entities.

In comparison, pronouns replace nouns to avoid repetition, such as using "he" or "they" instead of repeating a name or noun each time. Adjectives are descriptive words that modify nouns, providing more information about them, such as size, shape, or color. Verbs, on the other hand, express actions or states of being and do not refer directly to persons, places, or things. Understanding the definition and usage of nouns is essential for constructing clear and meaningful sentences.