Slope
The vertical change is called the rise.
gradient
Vertical grooves are called "striations."
It is called the slope of a line.
Slope of the line
the term for the ratio of vertical change over horizontal change is slope
Vertical poems are called acrostic poetry.
A vertical row of bricks is called a channel.
They are simply just called lines.
The measure of change in elevation in a certain distance is called slope. It is typically expressed as the ratio of the change in vertical height to the horizontal distance between two points on a surface.
the slope More often called the gradient in maths - but means the same. It's also given by differentiating the equation.
The Slope