craze vs mass hysteria

craze and mass hysteria both are nouns.

Word	Noun	Adjective	Verb	Adverb
craze	Yes	No	Yes	No
mass hysteria	Yes	No	No	No

As nouns, mass hysteria is a hyponym of craze; that is, mass hysteria is a word with a more specific, narrower meaning than craze:

craze: state of violent mental agitation
mass hysteria: a condition in which a large group of people exhibit the same state of violent mental agitation

Other hyponyms of craze include nympholepsy, epidemic hysertia.

craze (noun)	mass hysteria (noun)
a fine crack in a glaze or other surface	a condition in which a large group of people exhibit the same state of violent mental agitation
an interest followed with exaggerated zeal
state of violent mental agitation

craze (verb)	mass hysteria (verb)
develop a fine network of cracks
cause to go crazy; cause to lose one's mind