psychiatry vs defence

psychiatry and defence both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychiatry	Yes	No	No	No
defence	Yes	No	No	No

psychiatry (noun)	defence (noun)
the branch of medicine dealing with the diagnosis and treatment of mental disorders	(military) military action or resources protecting a country against potential enemies
	the act of defending someone or something against attack or injury
	a defendant's answer or plea denying the truth of the charges against him
	protection from harm
	a structure used to defend against attack
	the justification for some act or belief
	the speech act of answering an attack on your assertions
	the defendant and his legal advisors collectively
	(sports) the team that is trying to prevent the other team from scoring
	an organization of defenders that provides resistance against attack
	(psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires