The invocation of a similar but different instance to that which is being represented, in order to bring out its salient features through the comparison. In the following extract from “The Tyger”, William Blake asks if the conventional analogy of Christ as the Lamb of God can explain the more terrific and violent aspects of creation:
When the stars threw down their spears,
And watered heaven with their tears,
Did he smile his work to see?
Did he who made the Lamb make thee?
Editors. "Analogy". The Literary Encyclopedia. First published 01 November 2001
[http://www.litencyc.com/php/stopics.php?rec=true&UID=44, accessed 11 December 2016.]