Coefficient and Co-ordinate

Coefficient noun - A constant number that serves as a measure of some property or characteristic.

Co-ordinate and coefficient are semantically related In some cases you can replace phrase "Co-ordinate" with "Coefficient", this terms are similar.

Co-ordinate noun - A number that identifies a position relative to an axis.

Coefficient and co-ordinate are semantically related in contributing topic. Sometimes you can use "Coefficient" instead an adjective phrase "Co-ordinate".