The framework of each discipline
Taekwondo and karate include leg techniques and codified forms. Their lineages, terminologies and competitions are distinct. The rules of sports taekwondo give an important place to kicks, without summarizing all its practices.
What comparison teaches
The visual resemblance between two kicks does not guarantee the same support or the same intention. The competition format, protections and scoring criteria influence the exercises. The choice of a course also depends on its actual teaching. No style guarantees success in all situations. A useful comparison looks at the same exercise, comparable level and explicit instructions. The club, the teacher and the regularity of the practice count as much as the etiquette of the discipline.
The leg in a specific framework
Both disciplines can offer direct, side or circular kicks, but the starting, returning and scoring instructions are not necessarily the same. The Korean forms and terms of taekwondo are not reduced to kata and Japanese vocabulary. During a trial lesson, observe how beginners learn balance and distance before complex variations. Also compare the place given to other techniques. A demonstration of high kicks informs a particular quality, without representing all the tasks of the course.
The rule influences the choice of legs
Ask what regulations and program follow the taekwondo classes offered. Leg sequences, distances and availability of the front foot may receive a different place depending on practice. A high or jumping movement catches the eye without summarizing the learning. Observe how returning, receiving, and continuing are taught. For someone coming from Shotokan, a difference in pace may be more informative than immediately searching for the most impressive kick.