their / there / they're are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
their: NA
there: (noun) a location other than here; that place. (adverb) in or at that place. (adverb) in that matter. (adverb) to or toward that place; away from the speaker.
they're: NA
their: dh·EH·r
there: dh·EH·r
they're: dh·EH·r
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)