rhumb / rum 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. 👇
rhumb: NA
rum: (noun) liquor distilled from fermented molasses.
rhumb: NA
rum: r·AH·m
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)