crewed / crude 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. 👇
crewed: (verb) serve as a crew member on.
crude: (adjective) not carefully or expertly made. (adjective) conspicuously and tastelessly indecent. (adjective) belonging to an early stage of technical development; characterized by simplicity and (often) crudeness. (adjective) not processed or subjected to analysis.
crewed: NA
crude: k·r·UW·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)