soccer / socker 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. 👇
soccer: (noun) a football game in which two teams of 11 players try to kick or head a ball into the opponents' goal.
socker: NA
soccer: s·AA·k·er
socker: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)