Homonym: scalar (Quantity)
A "scalar" is a single numerical value that represents a quantity without any direction. Scalars are used in various fields, such as mathematics and physics, to describe measurements like temperature, mass, and speed. For example, saying the temperature is 30 degrees Celsius provides a scalar value that indicates how hot it is, but it does not specify a direction.
In contrast to scalars, there are "vectors," which include both magnitude and direction. For instance, a velocity of 60 kilometers per hour to the north is a vector because it tells you how fast something is moving and in which direction. Scalars simplify calculations and help in understanding basic concepts in science and engineering.