Both martial arts are based on a Korean system. Taekwondo is known for its dynamic kicking techniques and defenses. Taekwondo is an excellent well-rounded art that not only teaches practical self-defense but also provides great cardio and toning of the body, as well as clarity of the mind.
Hapkido also uses kicks and strikes; however, more hand, wrist and joint manipulation is used in this art to control attackers.