Here's why:
* Conjunctions connect words, phrases, or clauses. They show relationships between these elements, like addition (and), contrast (but), or cause and effect (because).
* Names identify people, places, or things. They are nouns, and their function is to name something.
Example:
* Incorrect: "The cat and Sarah went to the park." (Here, "Sarah" is a name, not a conjunction. It's a noun functioning as a subject.)
* Correct: "The cat and the dog went to the park." (Here, "and" is a conjunction connecting the noun phrases "the cat" and "the dog.")
In summary: Names and conjunctions have completely different roles in a sentence. Names function as nouns, while conjunctions connect elements of a sentence.