oak / oke 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. 👇
oak: (noun) the hard durable wood of any oak; used especially for furniture and flooring. (noun) a deciduous tree of the genus Quercus; has acorns and lobed leaves.
oke: NA
oak: OW·k
oke: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)