no
"Forty" is an adjective and "years" is a plural noun.
Differences are.. If years is used as noun preceding an adjective it would be used in plural form because the year is a countable noun. For example... A) my daughter is thirteen years old....in this sentence the old is adjective and years is noun. (B) The above situation is distinguished with, there are two 63-year-old men in the meeting room. in this sentence the year is an adjective as
Resolute can only be used as an adjective.
it can used as a noun or as an adjective
whole can be used as an adjective
It can be used as an adjective or as a noun.
It can be used as an adjective or a noun.
Yes, it can be used as an adjective.
Wet can be used as an adjective. It can also be used as a verb to describe an action.
The word "adjective" (part of speech) is a noun.The adjective form, rarely used, is adjectival.
Any adjective can be used as a predicate adjective, an adjective that follows a linking verb. Examples: The noisy boy will arrive soon. (adjective) The boy is noisy. (predicate adjective)
its usually used as a verb not and adjective.