Just Incase You haven't Read the books

Kit ends in -kit.. ex: Graykit. A kit is a young cat.

Apprentice ends in -paw.. ex: Graypaw. An apprentice is a cat training to be a warrior

Warrior can end in almost anything.. ex: Grayrain. A warrior defends and protects their clan that they belong to

Queen can end in anything.. ex: Grayrain. A queen is a female cat who has mated and is expecting kits or nursing kits

Medicine cat can end in anything.. ex: Grayrain. A medicine cat is like a doctor or nurse

Leader ends in -star.. ex: Graystar. This is the clan's leader.

Elder can end in anything.. ex: Greyrain. Used to be a warrior and is now old and retired

Also just incase you couldn't guess a she-cat is a female cat and a tom is a male cat