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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.
cautionary advice about something imminent (especially imminent danger or other unpleasantness); "a letter of admonition about the dangers of immorality"; "the warning was to beware of surprises"; "his final word of advice was not to play with matches"