When other as a pronoun refers to more than one person or thing, it takes the plural form, others: Some scientists think we should reduce the number of flights to prevent global warming; others disagree. Not: … other disagree. Other must have a determiner before it when it comes in front of a singular countable noun.

Others is only used as a pronoun. But 'other' has different grammatical functions. On the other hand, 'others' refers to more than one; while 'other' refers to only one thing.

Other, the other, another are pronouns when they are replacing a noun. They can be singular or plural. ‘Others’ vs. ‘the others’ Both are pronouns, that is, they stand for a noun. ‘Others’ is more vague, we are not determining how many others, or which other ones. ‘The others’ is more specific; it stands for all the rest.

Other vs others We normally use other + a plural noun. I want to see other shops before deciding. Others is a pronoun, i.e. not followed by a noun. A lot of volunteers have joined us, but we need to find others.

Use others as a pronoun which refers to more than one thing or person ("Some people believe he's guilty. Others believe he's innocent"). Use the others as a pronoun which refers to a specific group of things or people, meaning the second, the opposite, or the alternative of two options ("Only Tina and Reggie liked the food.