No, the word 'enough' is not a noun or a verb. The word 'enough' is an adjective, an adverb, an indefinite pronoun, and an interjection.
Examples:
There's no such thing as enough chips in the cookies. (adjective)
If you drive far enough north, you come to the river. (adverb)
You may have some, we have enough for everyone. (indefinite pronoun)
Enough! It's starting to spill over the top. (interjection)
Incline is both a verb and a noun. It is not an adjective. As a verb: to incline or to be inclined. To have the inclination to do something. As a noun: an incline or an inclined plane.
Wonder is a verb. Wonder is also a noun. Wonder is NOT an adjective or preposition.
Surge is a noun (a surge) and a verb (to surge). It is not an adjective.
Excel isn't an adjective or a noun. It's a verb.
Noun
No, it is a verb or a noun (to go around, to surround; a round shape). The adjective form is circular.
The word 'census' is a noun. It is not a verb or an adjective.
Brief can be an adjective, a noun or a verb.
The word 'scanty' is an adjective (scanty, scantier, scantiest), that describes a noun as limited; barely enough; meager, insufficient; inadequate. The noun form for the adjective scanty is scantiness. The adverb for for the adjective scanty is scantily. There is no verb form for the adjective scanty.
It can be a noun or an adjective.
Eager is an adjective, the noun is eagerness, there is no verb.
penetrate is an adjective
A noun derivative modifies or describes a noun, while an adjective derivative modifies or describes a noun. For example, in the word "developmental psychology," "developmental" is the adjective derivative describing the noun "psychology." In the word "decision-making process," "decision" is the noun derivative modifying the noun "process."
It is an adjective, it describes a noun.
Distribute = verb Distribution = noun Distributable = adjective
Reaction is a noun, reactive is an adjective, but react itself is a verb.
noun, it is a thing. a verb is what you do and an adjective is discriptive words