"comparing" in the noun sense
1. comparison, comparing
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"
"comparing" in the verb sense
1. compare
examine and note the similarities or differences of
"John compared his haircut to his friend's"
"We compared notes after we had both seen the movie"
2. compare
be comparable
"This car does not compare with our line of Mercedes"
3. compare, liken, equate
consider or describe as similar, equal, or analogous
"We can compare the Han dynasty to the Romans"
"You cannot equate success in financial matters with greed"
4. compare
to form the comparative or superlative form on an adjective or adverb
Source: WordNet® (An amazing lexical database of English)
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