What is the term for the boundary where tectonic plates slide past each other?

The term for the boundary where tectonic plates slide past each other is "transform boundary." In this type of boundary, two tectonic plates move laterally relative to one another, which can result in significant seismic activity due to the friction and stress that builds up as they grind against each other. An example of a transform boundary is the San Andreas Fault in California. Here, the motion of the plates can lead to earthquakes, as the energy released when the plates finally slip can be quite substantial.

Divergent boundaries, in contrast, are where tectonic plates move apart from each other, leading to the creation of new crust, while convergent boundaries involve the collision of plates which can result in one plate being forced beneath another. A subduction zone is a specific type of convergent boundary where one plate goes under another, but it does not describe the sliding motion characteristic of transform boundaries.