What words are both adjective and noun verb?

You're asking about words that can function as all three parts of speech: adjective, noun, and verb. There aren't many words that fit this exact description, but here are some examples with explanations:

1. Words with Multiple Meanings:

* Fast:

* Adjective: "He drove a fast car."

* Noun: "They went for a fast at the restaurant." (meaning a period of abstaining from food)

* Verb: "The train fasts through the countryside." (meaning to travel quickly)

* Round:

* Adjective: "She made a round cake."

* Noun: "The players took a round of applause."

* Verb: "The boat rounds the bend in the river."

* Open:

* Adjective: "The door is open."

* Noun: "The open is where the best golfers compete." (referring to an open tournament)

* Verb: "She opened the door."

2. Words with "Noun/Verb" Relationship:

* Walk:

* Noun: "Take a walk in the park."

* Verb: "We walked for miles."

* Run:

* Noun: "A good run on the track."

* Verb: "They ran all the way home."

3. Words with "Adjective/Verb" Relationship:

* Clean:

* Adjective: "The room was clean."

* Verb: "She cleaned the house."

* Quiet:

* Adjective: "The library was quiet."

* Verb: "The crowd quieted down."

Important Notes:

* These words often change meaning depending on their grammatical role in a sentence.

* Many words can be used as both a noun and a verb, but not necessarily as an adjective.

* It's worth noting that some words can function as an adjective and a verb, but not as a noun, such as "strong" or "slow."

Let me know if you want to explore more examples or have a specific word in mind!