Is inside and indoor prefix words?

You are right! "Inside" and "indoor" are both prefix words, but they are also prepositions and adjectives.

Let's break it down:

* Prefix: A prefix is a word part that is added to the beginning of a word to change its meaning.

* Preposition: A preposition is a word that shows the relationship between a noun or pronoun and another word in the sentence.

* Adjective: An adjective is a word that describes a noun or pronoun.

Here's how "inside" and "indoor" work:

* "Inside" as a preposition: It tells us where something is located, e.g., "The cat is inside the house."

* "Inside" as an adjective: It describes something located within, e.g., "The inside of the car was dusty."

* "Indoor" as an adjective: It describes something that takes place or is used within a building, e.g., "We had an indoor picnic."

Both "inside" and "indoor" have the prefix "in-," which means "in" or "into."

So, while they are technically prefix words, they are more commonly understood as prepositions and adjectives, depending on the context.