defense vs psychological medicine

defense and psychological medicine both are nouns.

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

defense (noun)	psychological medicine (noun)
(military) military action or resources protecting a country against potential enemies	the branch of medicine dealing with the diagnosis and treatment of mental disorders
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