What is motion? Mention different types of motions.

(N/A) When a body changes its position with respect to time relative to another body,the body is said to be in motion with respect to that body.
Following are the various types of motions:
$(1)$ Rectilinear (straight line) motion,
$(2)$ Projectile motion,
$(3)$ Periodic motion,
$(4)$ Oscillatory motion,
$(5)$ Simple harmonic motion,
$(6)$ Uniform motion,
$(7)$ Non-uniform motion.