"Other" means "different (nouns)". "Another" means one addition to the same noun"


"an" =

: one + "other"  ...Examples:

"Do they have OTHER flavors of ice cream?" (different flavors)

I'd like ANOTHER cup of coffee. (one more of the same noun - coffee)."

"Are there OTHER English classes?" (different classes)

"I want to take ANOTHER English class." (I like the class, and want to take one more like it.)