secretary vs chief

secretary and chief both are nouns.

Word	Noun	Adjective	Verb	Adverb
secretary	Yes	No	No	No
chief	Yes	Yes	No	No

As nouns, chief is a hypernym of secretary; that is, chief is a word with a broader meaning than secretary:

secretary: a person who is head of an administrative department of government
chief: a person who is in charge

Other hypernyms of secretary include head, top dog.

secretary (noun)	chief (noun)
a desk used for writing	a person who is in charge
an assistant who handles correspondence and clerical work for a boss or an organization	a person who exercises control over workers
a person who is head of an administrative department of government	the head of a tribe or clan
a person to whom a secret is entrusted

secretary (adjective)	chief (adjective)
	most important element