A compound noun is a type of noun formed by combining two or more words to create a single, unified concept or entity. These words can be linked together using hyphens, or they can be written as a single word.
Compound nouns can be categorized into three main types: open compounds (e.g., “ice cream”), hyphenated compounds (e.g., “mother-in-law”), and closed compounds (e.g., “bookmark”).
Compound nouns help convey specific meanings or concepts efficiently, and they can consist of nouns, adjectives, verbs, or a combination of these elements. They play a significant role in enriching the English language and expressing complex ideas or objects.