Based on the provided reference, push kicks (also known as teeps in some martial arts) are a type of kick. The reference video "Whats the Difference Between PUSH KICKS/TEEPS & FRONT KICKS?" suggests that push kicks can be mixed up with other kicking techniques, such as front kicks, to create openings and opportunities, potentially even leading to a knockout by varying the levels of attack.
The reference highlights the strategic application of push kicks.