comparing
n. uncountablen. the act of looking at two or more things to see how they are similar or different. It helps you decide which one is better or more useful.
n. the act or process of examining two or more entities to identify similarities and differences. Often used in gerund form to describe the cognitive or analytical activity of evaluation.
Comparing prices before you buy a car is a smart idea.
A careful comparing of the two maps revealed several small errors in the newer version.
The constant comparing of her own lifestyle to the curated images she saw on social media led to a significant decline in her overall happiness and self-esteem.
While often used as a gerund (verb acting as a noun), it functions as a pure uncountable noun when describing the general activity of evaluation.