hysteria vs hysterical

hysteria is a noun but hysterical is not a noun.

Word	Noun	Adjective	Verb	Adverb
hysteria	Yes	No	No	No
hysterical	No	Yes	No	No

hysteria (noun)	hysterical (noun)
excessive or uncontrollable fear
neurotic disorder characterized by violent emotional outbreaks and disturbances of sensory and motor functions
state of violent mental agitation

hysteria (adjective)	hysterical (adjective)
	marked by excessive or uncontrollable emotion
	characterized by or arising from psychoneurotic hysteria