* Gender: Jim Carrey is a male, while Mariah Carey is a female.
* Occupation: Jim Carrey is a comedian and actor, while Mariah Carey is a singer and songwriter.
* Age: Jim Carrey is 61 years old, while Mariah Carey is 53 years old.
* Nationality: Jim Carrey is Canadian, while Mariah Carey is American.
* Ethnicity: Jim Carrey is of Irish and French-Canadian descent, while Mariah Carey is of African-American and Irish descent.
* Personal life: Jim Carrey has been married twice and has two children. Mariah Carey has been married twice and has two children.
Despite their differences, Jim Carrey and Mariah Carey are both successful entertainers who have made a significant impact on popular culture.