This includes individual volcanoes, lava flows, and broad lava plains. These processes compete with each other to shape the planetary surface.
Volcanism tends to more abundant than tectonism, although both seem to increase together.
With the exception of Venus, increasing erosion also appears to be correlated volcanism and tectonism. However, there is an inverse relation between the abundance of impact craters and the presence of the other geological processes. Such objects could easily penetrate the atmospheres of even Earth and Venus. Furthermore, the atmosphere of Mars is quite thin, yet the planet has far fewer craters than the completely void Moon or Mercury. Consider that the planets are constantly bombarded by cosmic junk.