raiser / razer / razor 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. 👇
raiser: (noun) a bridge partner who increases the partner's bid.
razer: NA
razor: (noun) edge tool used in shaving. (verb) shave with a razor.
raiser: r·EY·z·er
razer: NA
razor: r·EY·z·er
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)