Here are some examples:
Adjectives:
* Fast: The fast car zoomed past us.
* Slow: The slow train crawled along the tracks.
* Hard: The hard rock was difficult to break.
* Easy: The easy test was a breeze.
* Late: We arrived late to the party.
* Early: She woke up early to catch the sunrise.
* Loud: The loud music was annoying.
* Quiet: The quiet library was a good place to study.
* Deep: The deep ocean is full of mysteries.
* High: The high mountain offered a breathtaking view.
Adverbs:
* Fast: The car drove fast.
* Slow: The train moved slow.
* Hard: She worked hard on the project.
* Easy: The test was easy to pass.
* Late: We stayed up late talking.
* Early: He got up early to go for a run.
* Loud: He spoke loud so everyone could hear.
* Quiet: She spoke quiet to avoid disturbing anyone.
* Deep: The diver went deep into the water.
* High: The plane flew high above the clouds.
Important Note:
While many words can function as both adjectives and adverbs, some words only work as one or the other. For example, "quickly" is always an adverb and "beautiful" is always an adjective.
To determine if a word can act as both, consider its use in a sentence:
* Adjective: It modifies a noun or pronoun.
* Adverb: It modifies a verb, adjective, or another adverb.