As an expert in the English language, I can help clarify the correct usage of these homophones. "Their," "there," and "they're" are often confused due to their similar pronunciations, but they have distinct meanings and uses.

Their is a possessive pronoun used to show ownership or belonging. It replaces "they are" or "them are" in possessive contexts.

There is used to refer to a place or position, or it can be used as the introduction of a sentence or clause.

They're is a contraction of "they are," and it should be used when you are stating that something belongs to or is associated with them.

Now, to answer your question, "Is it their or there?" depends on the context:

1. If you're talking about something that belongs to them, you would use their.
2. If you're referring to a place or position, you would use there.

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To master the differences between there and their, keep in mind some few simple rules for their and their: There is a noun, an adverb, a pronoun, or an adjective, but it does not show possession. Only the word their (not there) shows possession. Their is almost always followed by a noun.read more >>