Prepositions are words that show the relationship between a noun or pronoun and another word in the sentence. They typically indicate location, direction, time, or other relationships. Examples of prepositions include "on," "in," "under," "at," "to," "from," and "during."
"Became" is a verb, specifically the past tense of the verb "become." Verbs express actions or states of being.
Here's an example to illustrate the difference:
* Preposition: "The cat sat on the mat." (On shows the location of the cat)
* Verb: "The caterpillar became a butterfly." (Became describes a change in state)