tolerate vs brook

tolerate is not a noun while brook is a noun.

Word	Noun	Adjective	Verb	Adverb
tolerate	No	No	Yes	No
brook	Yes	No	Yes	No

As verbs, tolerate and brook are synonyms defined as:

Other synonyms of tolerate include abide, bear, digest, endure, put up, stand, stick out, stomach, suffer, support.

tolerate (noun)	brook (noun)
	a natural stream of water smaller than a river (and often a tributary of a river)

tolerate (verb)	brook (verb)
put up with something or somebody unpleasant	put up with something or somebody unpleasant
allow the presence of or allow (an activity) without opposing or prohibiting
have a tolerance for a poison or strong drug or pathogen or environmental condition
recognize and respect (rights and beliefs of others)