psychological medicine vs displacement

psychological medicine and displacement both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychological medicine	Yes	No	No	No
displacement	Yes	No	No	No

psychological medicine (noun)	displacement (noun)
the branch of medicine dealing with the diagnosis and treatment of mental disorders	act of taking the place of another especially using underhanded tactics
	act of removing from office or employment
	the act of uniform movement
	to move something from its natural environment
	an event in which something is displaced without rotation
	(psychiatry) a defense mechanism that transfers affect or reaction from the original object to some more acceptable one
	(chemistry) a reaction in which an elementary substance displaces and sets free a constituent element from a compound