Final answer:
The difference between 'el médico' and 'la médica' is based on gender. 'El médico' refers to a male doctor while 'la médica' refers to a female doctor in Spanish.
Step-by-step explanation:
The difference between 'el médico' and 'la médica' is that 'el médico' is masculine and 'la médica' is feminine. In Spanish, nouns have gender, and 'el médico' refers to a male doctor while 'la médica' refers to a female doctor. This distinction is made based on the gender of the person being referred to, not the place or the number of doctors.
Learn more about Gender in Spanish nouns