Ours vs. Theirs
'Ours' and 'Theirs' are both what we call possessive pronouns. They are used to refer to something or someone belonging to or associated with us or others.
Theirs vs. Their's
Which one do you think is correct? Here, we will discuss the third-person plural possessive pronoun in the English language.
Theirs vs. Them
What is the difference between 'them' and 'theirs?' 'Theirs' is the third person plural possessive pronoun. 'Them' is a third-person pronoun. What else?
Theirs vs. Their
What is the difference between 'theirs' and 'their'? They're both pronouns. They're both third-person plurals. But they are of different categories of pronouns.
Theirs vs. There's
"Theirs" and "There's" have pretty similar pronunciations, but have different meanings and functions. To learn about their difference, read this part.