defense reaction vs defence reaction

defense reaction and defence reaction both are nouns.

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

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

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

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

defense reaction (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