drouth vs time period

drouth and time period both are nouns.

Word	Noun	Adjective	Verb	Adverb
drouth	Yes	No	No	No
time period	Yes	No	No	No

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

Other hypernyms of drouth include period, period of time.

drouth (noun)	time period (noun)
a shortage of rainfall	an amount of time
a prolonged shortage