When you draw an analogy between two things, you compare them for the purpose of explanation. The movie character Forest Gump made a silly analogy famous: "Life is like a box of chocolates."
Some standardized tests still have "analogy questions," which are given in this format: A : B :: C : ___ (read "A is to B as C is to what?"). This is a more formalized version of something we do every day: compare one thing to another. It's a useful way of speaking — if a scientist explains that the earth's forests function as its lungs, we understand the analogy to mean that both trees and lungs take in important elements from the air. But when Forrest Gump says life is like a box of chocolates because you never know what you're going to get, that's a pretty brainless analogy.
n drawing a comparison in order to show a similarity in some respect
n the religious belief that between creature and creator no similarity can be found so great but that the dissimilarity is always greater; any analogy between God and humans will always be inadequate
- doctrine of analogy
the religious belief that God cannot be known but is completely `other' and must be described in negative terms (in terms of what God is not)
the religious belief that God has given enough clues to be known to humans positively and affirmatively (e.g., God created Adam `in his own image')
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