Which nouns are acting as adjectives or proper To play on clay courts you must wear tennis shoes for traction?

Here's a breakdown of the nouns acting as adjectives and proper nouns in the sentence:

* Clay is a noun acting as an adjective modifying "courts". It tells us what kind of courts we're talking about.

* Tennis is a noun acting as an adjective modifying "shoes". It tells us what kind of shoes are needed.

* Traction is a noun acting as an adjective modifying "shoes". It tells us why the shoes are needed (for their traction).

There are no proper nouns in this sentence. A proper noun is a specific name of a person, place, or thing (e.g., John, London, Apple).