Prepositions are little words that indicate direction, time, place, etc. They are followed by a noun.
Adverbs can describe verbs, adjectives, other adverbs, or even the whole sentence.
Adjectives describe nouns and have two common patterns in English.
A la vista
Verbs are the action or state of being in a sentence. Verbs usually follow a subject and can be followed by an object. With imperative verbs, the subject is dropped.
Nouns are people, places, or things. Nouns and pronouns can be subjects of a sentence, objects of a sentence, or objects of a preposition. Nouns are often preceded by an article (Art), including a, an, the, a number (one, two), a quantifier (many, a few), or a possessive adjective (my, their).