The plural is catastrophes but would be pronounced as "catastro-fees".
The plural of tragedy is tragedies.
The noun catastrophes is the plural form of the noun catastrophe, both are common nouns.
a huge catastrophe
No, catastrophe is a noun.
The earthquake in China was a major catastrophe.
'Catastrophe' has four syllables.
U-Catastrophe was created in 2007.
Family Catastrophe was created in 1972.
Catastrophe Ballet was created in 1984.
Traces of Catastrophe was created in 1998.
The Catastrophe of Success was created in 1947.
Causing a Catastrophe was created in 2002.