What are collinear points?

Answer 1

Collinear points are points that lie on the same line. Noncollinear points do not lie on the same line. Any two points are always collinear, i.e. forming a line. Three or more points can be collinear along a single line.
Collinear points lies on the same straight line.

Answer 2

collinear point are point that lie on the same line.