Certain is an adjective.
Coincide is a verb. Coincidental is the adjective.
"No" is usually an interjection or an adjective, but never a verb!
Scared can be used as a verb in certain ways, e.g. "you scared me" where it is in the past tense.But it can also be used as an adjective (scared tourists).
Surge is a noun (a surge) and a verb (to surge). It is not an adjective.
Verb
Certain is not a verb so it does not have a past tense.
A verb = Participle, which can turn into an adjective in certain contexts.
No, "inevitable" is an adjective, not a verb. It describes something that is certain to happen and cannot be avoided.
The sentence "Are you certain of that?" has no direct object. The only verb is "are", and it is a linking verb rather than an action verb, so "certain" is a predicate adjective.
No, it is a verb or a noun (to go around, to surround; a round shape). The adjective form is circular.
The word positive is an adjective. It means to be certain.
Adjective.
peeked a adjective or verb
Yes, it is an adjective meaning having a certain texture. The noun form is crunch, and the verb crunch means to chew noisily.
No, it is an adjective. Breathe is a verb, breathing is a verb too... but then breathable is an adjective, which makes unbreathable an adjective.
verb of brave?
It's an adjective.