Answer:
1. The word that does not belong in the group is "la nariz." The other three words are related to illnesses or symptoms, while "la nariz" refers specifically to the nose.
2. The word that does not belong in the group is "afeitarse." The other three words are related to getting sick or experiencing symptoms, while "afeitarse" means "to shave."
3. The word that does not belong in the group is "el cuerpo." The other three words are related to medications or treatments, while "el cuerpo" means "the body."
4. The word that does not belong in the group is "la receta." The other three words are symptoms or conditions, while "la receta" means "the prescription."
5. The word that does not belong in the group is "sentirse bien." The other three words are related to being sick or experiencing symptoms, while "sentirse bien" means "to feel well."