monospaced → με σταθερό πλάτος, σταθερού πλάτους
variable-width → με μεταβλητό πλάτος, μεταβλητού πλάτους
A monospaced font, also called a fixed-pitch, fixed-width, or non-proportional font, is a font whose letters and characters each occupy the same amount of horizontal space. This contrasts with variable-width fonts, where the letters and spacings have different widths.
Monospaced font - Wikipedia