epic / epoch 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. 👇
epic: (adjective) very imposing or impressive; surpassing the ordinary (especially in size or scale). (adjective) constituting or having to do with or suggestive of a literary epic.
epoch: (noun) (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded. (noun) a unit of geological time that is a subdivision of a period and is itself divided into ages.
epic: EH·p·ih·k
epoch: EH·p·ah·k
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)