The abstract noun form of the adjective 'useful' is usefulness.The word 'useful' is the adjective form of the abstract noun use.
The word "useful" is an adjective. It describes a noun by indicating that something has a practical purpose or is beneficial in some way.
"Useful" is an adjective that describes something as being beneficial or serving a purpose. It is not typically used as a verb in standard English.
The adjective form for the verb to use is the past participle, used (a used car).The adjective form for the noun use is useful(useful information).
Useful is not a noun or a verb, it is an adjective. Adjectives are descriptive words used to describe nouns. For example, if you say, "the useful dog," useful is the adjective modifying dog, the noun.
The abstract noun form of the adjective 'useful' is usefulness.The word 'useful' is the adjective form of the abstract noun use.
Quite is an adverb; useful is an adjective.
usefulness
No, it is not an adverb. Useful is an adjective and the adverb form is usefully.
There is no predicate adjective in that sentence. If it read, "Bird feeders are useful by providing us with yearlong enjoyment," "useful" would be a predicate adjective. In this case the simple predicate "are" connects the adjective "useful," included in the complete predicate, with the subject "bird feeders."
Used is a verb (past tense of use) and an adjective (a used car).
it could be essential, useful, luxurious etc..........