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Craziness
Intensity of Insanity
Use 'craziness' to describe extreme cases of madness, where behavior is very unpredictable. 
Metaphorical Use
Sometimes 'craziness' isn't literal but used to stress an intense situation or feeling. 
Negative Connotation
While describing a person, 'craziness' can be offensive. Use it carefully to avoid disrespect. 