nicks / nix 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. 👇
nicks: (noun) (British slang) a prison. (verb) cut slightly, with a razor. (verb) cut a nick into. (verb) divide or reset the tail muscles of. (verb) mate successfully; of livestock.
nix: NA
nicks: n·IH·k·s
nix: n·IH·k·s
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)