other people 其他的人,another person 另一个人

"another" (an+other) is similar to "one additional" unit from the same category. And "other" means something that differentiates from the current one.

'Another' is just 'an' and 'other' written as one word. So 'another' simply means 'one other'. If you know how to use 'a' / 'an', you should know how to use 'another'. We use 'an+other' for singular, countable indefinite nouns: another person another book another country For all other nouns, we use just say 'other': the other book/that other book/my other book (definite) other books/some other books (plural) other information (indefinite)