How to say depression in English?

First, the explanation of depression

Depression; Sadness; Depression; Depression; Decline; Low pressure area

Second, the phrase:

Danakil depression Danakil depression; Danakil depression

Industrial depression; industrial depression; Industrial decline; Translation; Decline in wealth

Extended data:

Disappointment, despair, despair and depression all mean "despair and depression", and their differences are as follows:

Disappointment refers to the failure of wishes or expectations.

Despair is a common word, which refers to losing hope and confidence due to disasters and other factors and falling into a depressed and desperate situation.

Despair has a strong tone, which means that people take reckless crazy actions because of despair.

Depression focuses on depression caused by major failures or setbacks.