adventuress / adventurous 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. 👇
adventuress: (noun) a woman adventurer.
adventurous: (adjective) willing to undertake or seeking out new and daring enterprises.
adventuress: NA
adventurous: ae·d·v·EH·n·ch·er·ah·s
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)