dean / dene 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. 👇
dean: (noun) an administrator in charge of a division of a university or college. (noun) United States film actor whose moody rebellious roles made him a cult figure (1931-1955). (noun) a man who is the senior member of a group. (noun) (Roman Catholic Church) the head of the College of Cardinals.
dene: NA
dean: d·IY·n
dene: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)