Both Uses

comprehend
in
A Wagner Matinee
(Auto-generated)

Had she enough left to at all comprehend this power which had kindled the world since she had left it?†
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comprehend = understand -- especially to understand it completely
I was still perplexed as to what measure of musical comprehension was left to her, she who had heard nothing but the singing of gospel hymns at Methodist services in the square frame schoolhouse on Section Thirteen for so many years.†

comprehension = the understanding of something

Definitions:

(1) (comprehend)
to understand something -- especially to understand it completely
(2) (meaning too rare to warrant focus)
Much more rarely (and more frequently in the past), comprehend can mean to include as part of something broader. That was the first sense of the word listed in Webster's Dictionary of 1828 with this sample sentence: "The empire of Great Britain comprehends England, Scotland and Ireland, with their dependencies."