noun a word that represents a person, place, thing, or idea
adverb modifies a verb, adjective, or another adverb to indicate time, manner, place, or degree
preposition shows the relationship between a noun or pronoun and other words in a sentence
article a word that is used with a noun to specify grammatical definiteness of the noun
noun a messaging app owned by Facebook that allows users to send text messages, voice messages, images, and videos over the internet