Conjunctions and prepositions can be interchanged?

No, conjunctions and prepositions cannot be interchanged. They are different parts of speech with distinct functions:

Conjunctions connect words, phrases, or clauses. They show relationships between the elements they connect.

* Examples: and, but, or, because, although, so, yet, while, since

Prepositions show the relationship between a noun or pronoun and other words in a sentence. They often indicate location, time, direction, or manner.

* Examples: on, in, at, to, from, by, with, for, during, before, after

Here's why you can't interchange them:

* Meaning: Interchanging them would change the meaning of the sentence. For example, "I went to the store and bought milk" is different from "I went and the store to bought milk."

* Grammar: The use of conjunctions and prepositions is governed by grammatical rules. Each word has a specific function in a sentence, and switching them would create ungrammatical sentences.

In summary: Conjunctions and prepositions serve distinct roles in a sentence, and swapping them would result in incorrect grammar and altered meaning.