What is the type of word that describes or gives more detail about a noun 

What is the type of word that can modify or describe a verb, an adjective, or another adverb?

Which word is an adjective? "The small notebook is on my desk." 

Which word is an adverb? "His room is clean, and he works carefully."

Which word is an adjective? "The flower is colorful and smells sweetly."

Which word is an adverb? "The lazy cat moved slowly across the floor.