war cry vs watchword

war cry and watchword both are nouns.

Word	Noun	Adjective	Verb	Adverb
war cry	Yes	No	No	No
watchword	Yes	No	No	No

As nouns, war cry and watchword are synonyms defined as:

Other synonyms of war cry include battle cry, cry, rallying cry.

war cry (noun)	watchword (noun)
a yell intended to rally a group of soldiers in battle	a secret word or phrase known only to a restricted group
a slogan used to rally support for a cause	a slogan used to rally support for a cause