Grammatical terms are the building blocks of language that help us understand how words function in sentences. These terms include parts of speech like nouns, verbs, adjectives, and adverbs, which categorize words based on their roles. For example, nouns name people, places, or things, while verbs express actions or states of being. Additionally, grammatical terms encompass concepts like subject, predicate, and clause. The subject is the main focus of a sentence, while the predicate tells us what the subject does. Clauses are groups of words that contain a subject and a verb, forming the foundation for more complex sentences.