What’s the difference between their, there, and they’re? They’re really not that complicated; once you understand their differences, there shouldn’t be any more confusion.
Their is the third person plural possessive adjective, used to describe something as belong to them. Their is nearly always followed by a noun.
There has several different uses.
1. Adverb that means the opposite of "here"
2. Pronoun that introduces a noun or clause.
3. Adjective that emphasizes which person.
4. Noun that means "that place."
They’re is the contraction of "they are" and is often followed by the present participle (verb form ending in -ing).
The Bottom Line
The confusion between their, there, and they’re occurs because the three words are pronounced in very similar ways.
If the word means "belonging to them," use their. If you’re able to replace the word with "they are," use they’re. Otherwise, there is only one correct answer: there.