say it: kuhm-PER-ing
comparing is a noun meaning "the act of examining resemblances". It carries one recorded sense.
the act of examining resemblances
“they made a comparison of noise levels”
“the fractions selected for comparison must require pupils to consider both numerator and denominator”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for comparing come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.