repose vs lie-in

repose and lie-in both are nouns.

Word	Noun	Adjective	Verb	Adverb
repose	Yes	No	Yes	No
lie-in	Yes	No	No	No

As nouns, lie-in is a hyponym of repose; that is, lie-in is a word with a more specific, narrower meaning than repose:

Other hyponyms of repose include bed rest, bedrest, laziness, dormancy, quiescence, quiescency, sleeping, leisure.

repose (noun)	lie-in (noun)
freedom from activity (work or strain or responsibility)	a long stay in bed in the morning
a disposition free from stress or emotion
the absence of mental stress or anxiety

repose (verb)	lie-in (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