desk vs secretary

desk and secretary both are nouns.

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

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

desk: a piece of furniture with a writing surface and usually drawers or other compartments
secretary: a desk used for writing

Other hyponyms of desk include davenport, escritoire, secretaire, writing table, writing desk.

desk (noun)	secretary (noun)
a piece of furniture with a writing surface and usually drawers or other compartments	a desk used for writing
	an assistant who handles correspondence and clerical work for a boss or an organization
	a person who is head of an administrative department of government
	a person to whom a secret is entrusted