Simple Examples:
* She bought a silk dress. (Silk is a noun describing the type of dress)
* He drove a sports car. (Sports is a noun describing the type of car)
* The city park was crowded. (City is a noun describing the type of park)
More Complex Examples:
* The government building was closed. (Government is a noun describing the type of building)
* We enjoyed a country walk. (Country is a noun describing the type of walk)
* She wrote a mystery novel. (Mystery is a noun describing the type of novel)
Key Points:
* Nouns as adjectives modify other nouns. They tell us more about the noun they are describing.
* They often come directly before the noun they modify.
* Sometimes, they are combined with hyphens to form compound adjectives. For example, "high-school student" or "state-of-the-art technology."
Let me know if you'd like more examples or want to explore specific types of nouns used as adjectives!