A simple rule to help you remember the difference between another and other is: another + singular noun other + plural noun others (a pronoun to replace other + plural noun) I need another cup. (cup is singular so we use another) I need other cups. (cups is plural so we use other) I need others. (refers to other cups)

We can use another as a pronoun, i.e. not followed by a noun. I’ve already had one beer, but I’ll have another. Others is always a pronoun, i.e. never followed by a noun. I don’t want to use these glasses. Aren’t there any others? (=other glasses)

Unlike another, which is used as a determiner before singular count nouns, the word other is used as a determiner before plural or uncountable nouns. For instance: other cities, other people, other places, other information, other music, etc. Other means additional or extra, alternative, or different types of things or people.