leisureliness vs unhurriedness

leisureliness and unhurriedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
leisureliness	Yes	No	No	No
unhurriedness	Yes	No	No	No

As nouns, unhurriedness is a hypernym of leisureliness; that is, unhurriedness is a word with a broader meaning than leisureliness:

Other hypernyms of leisureliness include deliberateness, deliberation, slowness.

leisureliness (noun)	unhurriedness (noun)
slowness by virtue of being leisurely	a rate demonstrating an absence of haste or hurry