pocks / pox 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. 👇
pocks: (noun) a pustule in an eruptive disease.
pox: (noun) a contagious disease characterized by purulent skin eruptions that may leave pock marks.
pocks: p·AA·k·s
pox: p·AA·k·s
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)