derangement vs mental unsoundness

derangement and mental unsoundness both are nouns.

Word	Noun	Adjective	Verb	Adverb
derangement	Yes	No	No	No
mental unsoundness	Yes	No	No	No

As nouns, derangement and mental unsoundness are synonyms defined as:

derangement and mental unsoundness: a state of mental disturbance and disorientation

Other synonyms of derangement include unbalance.

derangement (noun)	mental unsoundness (noun)
the act of disturbing the mind or body	a state of mental disturbance and disorientation
a state of mental disturbance and disorientation