core / corps / kor 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. 👇
core: (noun) a small group of indispensable persons or things. (noun) the center of an object. (noun) the central part of the Earth. (noun) a cylindrical sample of soil or rock obtained with a hollow drill. (noun) (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories. (noun) the chamber of a nuclear reactor containing the fissile material where the reaction takes place. (noun) a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil. (verb) remove the core or center from.
corps: (noun) an army unit usually consisting of two or more divisions and their support. (noun) a body of people associated together.
kor: NA
core: k·AO·r
corps: k·AO·r
kor: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)