grip / grippe 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. 👇
grip: (noun) the friction between a body and the surface on which it moves (as between an automobile tire and the road). (noun) worker who moves the camera around while a film or television show is being made. (noun) an intellectual hold or understanding. (verb) hold fast or firmly.
grippe: NA
grip: g·r·IH·p
grippe: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)