"Normal" refers to that which conforms to norms, so while norms are the rules that guide our behavior, normal is the act of abiding by them. "Normative," however, refers to what we perceive as normal, or what we think should be normal, regardless of whether it actually is.

Normal is a related term of normative. is that normal is according to norms or rules while normative is of or pertaining to a norm or standard. is (geometry) a line or vector that is perpendicular to another line, surface, or plane.