hour / our 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. 👇
hour: (noun) a period of time equal to 1/24th of a day. (noun) clock time. (noun) a special and memorable period. (noun) distance measured by the time taken to cover it.
our: NA
hour: AW·er
our: AW·er
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)