Mobby = Noun
Hottest = Adjective
Hardly = Adverb
Headed = Verb
Giant = Adjective
Absolutely = Adverb
Quickly = Adverb
Bottom = Noun
Chocolate = Noun
Lifeguards = Noun
Let's define each word, a noun is a thing, place, or person. A adjective is something that describes or modifys a word. A verb is something that describes an action. An adverb modifies an adjective, another adverb, or anothing type of word group.
I hope this helps!