Cardinal traits are generally rare and include only one dominant one per person. Core traits are usually 5-10 that can be used to describe a person in most situations, while secondary traits are subtle. In Monica's case, her key characteristic seems to be the perfectionism she has applied in her previous work and now in domestic matters. He has almost an obsessive compulsive disorder about keeping things perfect in the house and takes great pleasure in applying himself in this way. Secondary traits include that he is funny, has a vision of himself, sociable, generous, talkative