A preposition is a part of speech used in language to establish a relationship between a noun or pronoun and other elements in a sentence.
Prepositions show the spatial, temporal, or logical relationship between the noun or pronoun and the rest of the sentence. Common prepositions include “in,” “on,” “under,” “above,” “beside,” “between,” “before,” “after,” and “with.”
Prepositions are essential for indicating location (e.g., “in the house”), time (e.g., “after lunch”), direction (e.g., “towards the beach”), and other relationships in sentences. They help clarify the meaning and structure of sentences.