"Alot" is commonly mistaken as a single word, but it is actually a misspelling of the phrase "a lot," which functions as a noun meaning a large quantity or extent of something. In this context, "a lot" can be used in various grammatical roles, typically as a noun phrase. The correct usage is "a lot" (two words), while "alot" is not recognized as a standard word in English.
Exponential is an adjective.
Allegory is a noun.
Overcome is a verb.
A verb, more particularly a "linking verb."
The word alarm is a verb. It can also be a noun as in a sound to alert you to something.
A noun, the name of the sound or act of laughing.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "twirl" is a verb.
The part of speech for "explicit" is an adjective.
The part of speech for "indefinite" is an adjective.
The part of speech for "lecturer" is a noun.