vertical calm
Height or altitude.
y
WELL...you might call it a BORE. Sorry, those puns were the PITS.
The combination of a horizontal axis and a vertical axis is called a Cartesian coordinate system, or in short, a graph.
vertical calm
Vertical blocks are called columns.
Height or altitude.
y
columns
window pane
The vertical sections of the periodic table are called groups or columns.
Columns
A vertical space divider - or just call it a wall.
the vertical Axis
The vertical line is the Prime Meridian.
There is no vertical bar in a fraction. A fraction is written with either a horizontal bar or a slanted bar, which is technically called a "vinculum", but most people call it a "fraction bar".