1) Deviation 2) Divergence 3) Series 1) Divergence 
• (n.) Disagreement; difference. • (n.) A receding from each other in moving from a common center; the state of being divergent; as, an angle is made by the divergence of straight lines.
divergency 1. The act of moving away in different direction from a common point. 2. The quality or state of being divergent; the amount or degree of divergencE.3. In mathematics, divergent character or quality (of a series).
divergence; deviation.