presidium vs committee

presidium and committee both are nouns.

Word	Noun	Adjective	Verb	Adverb
presidium	Yes	No	No	No
committee	Yes	No	No	No

As nouns, committee is a hypernym of presidium; that is, committee is a word with a broader meaning than presidium:

presidium: a permanent executive committee in socialist countries that has all the powers of some larger legislative body and that acts for it when it is not in session
committee: a special group delegated to consider some matter

Other hypernyms of presidium include commission.

presidium (noun)	committee (noun)
a permanent executive committee in socialist countries that has all the powers of some larger legislative body and that acts for it when it is not in session	a special group delegated to consider some matter
	a self-constituted organization to promote something