Because they sound alike the words there and their are often misspelled. A good way to remember the difference is: The place "here" with a T is "there". While "there" refers to a place, "their" means belonging to them. For example, Their van was destroyed in the accident.
|Used as a contraction||No||No|
|Meaning||Belonging to them.||(in or to) that place.|
edit Examples of There vs Their
- She was envious of their expensive shoes.
- I don't want to go there because it's too cold.
- Once upon a time, there was a princess who turned into a frog.
- a form of the possessive case of they used as an attributive adjective, before a noun: their home; their rights as citizens; their departure for Rome.
- used after an indefinite singular antecedent in place of the definite masculine form his or the definite feminine form her: Someone left their book on the table. Did everyone bring their lunch?
- in or at that place (opposed to here): She is there now.
- at that point in an action, speech, etc.: He stopped there for applause.
- in that matter, particular, or respect: His anger was justified there.
- used by way of calling attention to something or someone: There they go.
- used to introduce a sentence or clause in which the verb comes before its subject or has no complement: There is no hope.
- that place: He comes from there, too.
- that point.
- that state or condition: I'll introduce you to her, but you're on your own from there on.
- used for emphasis, esp. after a noun modified by a demonstrative adjective: Ask that man there.
- used to express satisfaction, relief, encouragement, approval, consolation, etc.: There! It's done.
edit Video explaining the differences
In this video, a teacher explains the differences between their, there and they're: