defense mechanism vs defence reaction

defense mechanism and defence reaction both are nouns.

Word	Noun	Adjective	Verb	Adverb
defense mechanism	Yes	No	No	No
defence reaction	Yes	No	No	No

As nouns, defense mechanism and defence reaction are synonyms defined as:

defense mechanism and defence reaction: (psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires

Other synonyms of defense mechanism include defence, defence mechanism, defense, defense reaction.

defense mechanism (noun)	defence reaction (noun)
(psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires	(psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires