scarceness vs dearth

scarceness and dearth both are nouns.

Word	Noun	Adjective	Verb	Adverb
scarceness	Yes	No	No	No
dearth	Yes	No	No	No

As nouns, dearth is a hyponym of scarceness; that is, dearth is a word with a more specific, narrower meaning than scarceness:

Other hyponyms of scarceness include paucity, infrequency, rareness, rarity.

scarceness (noun)	dearth (noun)
a small and inadequate amount	an insufficient quantity or number
	an acute insufficiency