Collective Nouns, known as “Danh từ tập hợp” in Vietnamese, refer to a group or collection of similar items, beings or concepts as a single unit. These are words that connote groups of people, animals, or things. For instance, ‘đàn’ can refer to a herd of cows or flock of birds, ‘quyển’ is used for books, and ‘bộ’ for a set of identical items. The accurate usage of Collective Nouns is crucial as it brings a more rich and specific context to your sentences, allowing a vivid picture of what you’re trying to convey.