What is the difference between closed class items and opened class items?

Answer 1

Closed class items, also known as function words, include categories like conjunctions, prepositions, pronouns, and determiners; they rarely add new members and serve grammatical functions in sentences. Open class items, on the other hand, consist of content words such as nouns, verbs, adjectives, and adverbs, which can easily expand as new words are created or borrowed. Essentially, closed class items focus on structure and relationships within language, while open class items contribute to the content and meaning.