dearth vs shortage

dearth and shortage both are nouns.

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

As nouns, dearth and shortage are synonyms defined as:

Other synonyms of dearth include famine.

dearth (noun)	shortage (noun)
an insufficient quantity or number	the property of being an amount by which something is less than expected or required
an acute insufficiency	an acute insufficiency