Geocentric latitude assumes Earth as perfect sphere, geodetic latitude uses ellipsoid. Geodetic latitude provides more accurate surface location representation
ITRS defines procedures for creating reference frames for Earth surface measurements. ITRF is a realization of ITRS centered at Earth's center of mass. New ITRF solutions are produced every few years using latest techniques. ITRF differences between versions are only a few centimeters
Earth rotates counter-clockwise (prograde) and revolves around sun. One day is 24 hours with respect to sun, 23 hours with respect to stars. Earth revolves at 67,000 mph, pulling toward and away from sun. Seasons result from Earth's tilt on axis, affecting climate
Rotation is circular movement around a center of rotation. Revolution occurs when one body moves around another. Earth rotates from west to east on its axis at 23 1/2º angle