executive vs triumvir

executive and triumvir both are nouns.

Word	Noun	Adjective	Verb	Adverb
executive	Yes	Yes	No	No
triumvir	Yes	No	No	No

As nouns, triumvir is a hyponym of executive; that is, triumvir is a word with a more specific, narrower meaning than executive:

executive: someone who manages a government agency or department
triumvir: one of a group of three sharing public administration or civil authority especially in ancient Rome

Other hyponyms of executive include commissioner, DCI, Director of Central Intelligence, prefect, Secretary General.

executive (noun)	triumvir (noun)
persons who administer the law	one of a group of three sharing public administration or civil authority especially in ancient Rome
a person responsible for the administration of a business
someone who manages a government agency or department

executive (adjective)	triumvir (adjective)
having the function of carrying out plans or orders etc.