comprehend vs comprehensive

comprehend is not a noun while comprehensive is a noun.

Word	Noun	Adjective	Verb	Adverb
comprehend	No	No	Yes	No
comprehensive	Yes	Yes	No	No

comprehend (noun)	comprehensive (noun)
	an intensive examination testing a student's proficiency in some special field of knowledge

comprehend (adjective)	comprehensive (adjective)
	including all or everything
	broad in scope

comprehend (verb)	comprehensive (verb)
get the meaning of something
to become aware of through the senses
include in scope; include as part of something broader; have as one's sphere or territory