| The American Heritage® Book of English Usage. |
A Practical and Authoritative Guide to Contemporary English. 1996.
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3. Word Choice: New Uses, Common Confusion, and Constraints
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| § 66. compare to / compare with |
| Compare usually takes the preposition to when it refers to the activity of describing the resemblances between unlike things: He compared her to a summer day. Scientists sometimes compare the human brain to a computer. It takes with when it refers to the act of examining two like things in order to discern their similarities or differences: The police compared the forged signature with the original. The committee will have to compare the Senate’s version of the bill with the version that was passed by the House. When compare is used to mean “to liken (one) with another,” with is traditionally held to be the correct preposition: That little bauble is not to be compared with (not to) this enormous jewel. But to is frequently used in this context and is not incorrect. | 1 |
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| The American Heritage® Book of English Usage. Copyright © 1996 by Houghton Mifflin Company. All rights reserved. |
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