Vinculum is a link that signifies union while a fraction is a part of the whole.
A part to whole is, essentially, a ratio. 2:10 is a ratio---it could also be 2(the part) to 10(the whole). The part is how much the part is in comparison to the whole-1/2 could be the part, while 1 is the whole.
A proper fraction can represent a comparison between a part (the numerator) and the whole (the denominator).
Comparison is a noun.
The word 'comparison' is a noun.
The part of an experiment that's the standard for comparison is called the Control
Comparison And Contrast. (:
The part of the experiment used for comparison and that is not tested is called the control.
necessary as part of whole
a fraction is part of the whole...