rex / wrecks 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. 👇
rex: NA
wrecks: (noun) something or someone that has suffered ruin or dilapidation. (noun) a ship that has been destroyed at sea.
rex: r·EH·k·s
wrecks: r·EH·k·s
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)