Drouth
Part of speech: noun
Definition: A period of unusually low rainfall, longer and more severe than a dry spell.
Drought
Part of speech: noun
Definition: A period of below average rain fall, longer and more severe than a dry spellA longer than expected term without success, particularly in sport.
Example sentence: God has cared for these trees, saved them from drought, disease, avalanches, and a thousand tempests and floods. But he cannot save them from fools.