activate
no fun is an activity because fun is a verb any verb is an activity
Training is a noun and a verb. Noun: e.g. activity of acquiring skills. Verb: present participle of the verb 'train'.
No, it is not a verb. Frenzy (hectic activity) is a noun.
No, it is not a verb. Crime is a noun, meaning illegal activity.
Trade can be both a noun and a verb. As a noun, it refers to the activity of buying, selling, or exchanging goods or services. As a verb, it means to engage in the activity of buying, selling, or exchanging goods or services.
Eavesdropping is a verb (to eavesdrop. As a rule of thumb, pretty much any word that is an activity is a verb).
No, spacious is an adjective. Spacious is not an activity.
No, "thought" is not an action verb. It is a verb that describes a mental process or activity rather than a physical action.
Hustle is both a verb and a noun. As a verb you may hustle about to put the house in order. As a noun, energetic activity as in work.
PARTICIPANTS - (from the verb "to participate", to share in an activity)
A clothes hamper would be a noun. To hamper an activity would be a verb.
Peak can be used as a verb. Merriam-Webster.com defines peak as "to reach a maximum (as of capacity, value, or activity).