An actress.
If it is a male, it is called an actor, and (if female) an actress.
An actress.
A person who acts without thinking is usually called "impulsive."
An actor/actress
an Irishwoman
Mature
If it is a rich person who donates money, it is called a philanthropist.
A female person from Spain is called "española" in Spanish.
A female person is Spanish is: persona. This would be exactly the same for a male. The word person is feminine and can refer to either a female or male.
a female dog
Sexless
A person that is about to get married is called a bride (female) and a bridegroom(male)