earn / erne / urn 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. 👇
earn: (verb) acquire or deserve by one's efforts or actions.
erne: NA
urn: (noun) a large vase that usually has a pedestal or feet. (noun) a large pot for making coffee or tea.
earn: ER·n
erne: ER·n
urn: ER·n
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)