repose vs quietude

repose and quietude both are nouns.

Word	Noun	Adjective	Verb	Adverb
repose	Yes	No	Yes	No
quietude	Yes	No	No	No

As nouns, quietude is a hypernym of repose; that is, quietude is a word with a broader meaning than repose:

Other hypernyms of repose include quietness, tranquility, tranquillity.

repose (noun)	quietude (noun)
freedom from activity (work or strain or responsibility)	a state of peace and quiet
a disposition free from stress or emotion
the absence of mental stress or anxiety

repose (verb)	quietude (verb)
put or confide something in a person or thing
lie when dead
put in a horizontal position
lean in a comfortable resting position
to put something (eg trust) in something
be inherent or innate in