pray / prey 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. 👇
pray: (verb) address a deity, a prophet, a saint or an object of worship; say a prayer.
prey: (noun) a person who is the aim of an attack (especially a victim of ridicule or exploitation) by some hostile person or influence. (noun) animal hunted or caught for food. (verb) profit from in an exploitatory manner.
pray: p·r·EY
prey: p·r·EY
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)