racket / rackett / racquet 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. 👇
racket: (noun) a loud and disturbing noise. (noun) an illegal enterprise (such as extortion or fraud or drug peddling or prostitution) carried on for profit. (noun) a sports implement (usually consisting of a handle and an oval frame with a tightly interlaced network of strings) used to strike a ball (or shuttlecock) in various games. (verb) make loud and annoying noises. (verb) hit (a ball) with a racket.
rackett: NA
racquet: NA
racket: r·AE·k·ih·t
rackett: NA
racquet: r·AE·k·ih·t
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)