desk vs escritoire

desk and escritoire both are nouns.

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

As nouns, escritoire is a hyponym of desk; that is, escritoire 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
escritoire: a desk used for writing

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

desk (noun)	escritoire (noun)
a piece of furniture with a writing surface and usually drawers or other compartments	a desk used for writing