Orthogonal coordinates are commonly used to represent points in a plane. These coordinates are typically referred to as ordinate and abscissae, or y-axis and x-axis. In geometry, the ordinate represents the vertical distance of a point from the x-axis, while the abscissae represents the horizontal distance of a point from the y-axis. There are numerous synonyms for ordinate, including y-coordinate, vertical coordinate, and altitude. Similarly, synonyms for abscissae include x-coordinate, horizontal coordinate, and longitude. Understanding these different terms for ordinate and abscissae is essential in mathematics, physics, engineering, and many other fields where precise location data is required.