Brake light vs. tail light

I have a 2004 Hyundai Accent. I am just curious. When I put my foot on the brakes in the daytime, does the bulb that lights up in the back of my car the same bulb that turns on when I turn on my headlights in the nighttime? Thank you. abxxx

Yes, The bulbs have two filaments. One filament is for the tail lights. The other filament is for the brake lights.