aide-de-camp vs adjutant

aide-de-camp and adjutant both are nouns.

Word	Noun	Adjective	Verb	Adverb
aide-de-camp	Yes	No	No	No
adjutant	Yes	No	No	No

As nouns, aide-de-camp and adjutant are synonyms defined as:

aide-de-camp and adjutant: an officer who acts as military assistant to a more senior officer

Other synonyms of aide-de-camp include aide.

aide-de-camp (noun)	adjutant (noun)
an officer who acts as military assistant to a more senior officer	large Indian stork with a military gait
	an officer who acts as military assistant to a more senior officer