com·par·i·son 
/kəmˈperəsən/ noun
plural com·par·i·sons /kəmˈperəsən/ noun 1 : the act of looking at things to see how they are similar or different [count] ▪ a comparison of the data from the two studies [noncount] ▪ a wine that stands/bears comparison with [=it is as good as] wines that are much more expensive 2 : the act of suggesting that two or more things are similar or in the same category [count] ▪ the comparison of monkeys to humans ▪ I don't think comparisons of her situation and/with mine are appropriate. [noncount] ▪ His poetry evokes/invites comparison with [=it is similar to] the work of Robert Frost.
by/in comparison
: when compared with another : when looked at or thought about in relation to someone or something else
▪ Yesterday's weather was very cold. Today's weather is mild by comparison. — often + with ▪ He's a well-behaved child in comparison with his brother.
▪ Yesterday's weather was very cold. Today's weather is mild by comparison. — often + with ▪ He's a well-behaved child in comparison with his brother.
draw a comparison or draw comparisons
: to say that two or more things or people are similar
▪ The brochure draws a comparison between the hotel and a medieval palace. ▪ The writer draws unflattering comparisons between the mayor and a dictator.
▪ The brochure draws a comparison between the hotel and a medieval palace. ▪ The writer draws unflattering comparisons between the mayor and a dictator.
make a comparison or make comparisons 1 : to say that two or more things or people are similar
▪ His work has been widely praised. Comparisons have been made to the great painters of past centuries. 2 : to look at similarities and differences between two or more things or people
▪ The Web site allows consumers to make direct comparisons between competing products.
▪ His work has been widely praised. Comparisons have been made to the great painters of past centuries.
▪ The Web site allows consumers to make direct comparisons between competing products.
no comparison
— used to suggest that two or more things are very different ▪ There's really no comparison between the two models. [=one is much better than the other]
