psychoneurotic vs maladjusted

psychoneurotic is a noun but maladjusted is not a noun.

Word	Noun	Adjective	Verb	Adverb
psychoneurotic	Yes	Yes	No	No
maladjusted	No	Yes	No	No

psychoneurotic (noun)	maladjusted (noun)
a person suffering from neurosis

psychoneurotic (adjective)	maladjusted (adjective)
affected with emotional disorder	poorly adjusted to demands and stresses of daily living
	emotionally unstable and having difficulty coping with personal relationships
	not well adjusted