noun
Refers specifically to the worldwide economic depression of 1929–1939.
世界大恐慌は1929年に始まった。
The Great Depression began in 1929.
恐慌 is a general term for panic or economic crisis, while 世界大恐慌 specifically denotes the Great Depression.
Compound of 世界 (world), 大 (great), and 恐慌 (panic/crisis). The term is a direct translation of the English 'Great Depression'.