adjust vs adjuster

adjust is not a noun while adjuster is a noun.

Word	Noun	Adjective	Verb	Adverb
adjust	No	No	Yes	No
adjuster	Yes	No	No	No

adjust (noun)	adjuster (noun)
	one who investigates insurance claims or claims for damages and recommends an effective settlement

adjust (verb)	adjuster (verb)
alter or regulate so as to achieve accuracy or conform to a standard
adapt or conform oneself to new or different conditions
make correspondent or conformable
place in a line or arrange so as to be parallel or straight
decide how much is to be paid on an insurance claim