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n.
an ability to understand the meaning or importance of something (or the knowledge acquired as a result); "how you can do that is beyond my comprehension"; "he was famous for his comprehension of American literature"
n.
an inclination to support or be loyal to or to agree with an opinion; "his sympathies were always with the underdog"; "I knew I could count on his understanding"
n.
the capacity for rational thought or inference or discrimination; "we are told that man is endowed with reason and capable of distinguishing good from evil"