Microorganisms causing diseases that characteristically are waterborne prominently include protozoa and bacteria, many of which are intestinal parasites, or invade the tissues or circulatory system through walls of the digestive tract. Various other waterborne diseases are caused by viruses.
As the Moon revolves around Earth, both objects also progress in orbit around the Sun. After completing one revolution with respect to the stars, the Moon must continue a little farther along its orbit to catch up to the same position it started from relative to the Sun and Earth.
revolve, go around, rotate(verb) turn on or around an axis or a center. The Earth revolves around the Sun; The lamb roast rotates on a spit over the fire. orb, orbit, revolve(verb) move in an orbit. The moon orbits around the Earth; The planets are orbiting the sun; electrons orbit the nucleus.