drouth vs dryness

drouth and dryness both are nouns.

Word	Noun	Adjective	Verb	Adverb
drouth	Yes	No	No	No
dryness	Yes	No	No	No

As nouns, dryness is a hypernym of drouth; that is, dryness is a word with a broader meaning than drouth:

drouth: a shortage of rainfall
dryness: the condition of not containing or being covered by a liquid (especially water)

Other hypernyms of drouth include waterlessness, xerotes.

drouth (noun)	dryness (noun)
a shortage of rainfall	objectivity and detachment
a prolonged shortage	moderation in or abstinence from alcohol or other drugs
	the condition of not containing or being covered by a liquid (especially water)