The word other is an adjective. It refers to something different.
The word “other” is often used with “the.” It can be used with singular or plural nouns:
The word another is used when you are talking about one additional thing:
(one more baby)
It can also be used to describe something different, like a/an + other:
So what’s the difference between “the other” (when use for a singular noun) and “another” (also singular)? “The other” is specific – it is when there are only two options. “Another” is general – it describes one of many options.
(another color = one other color among many possibilities)