caffeinism vs poisoning

caffeinism and poisoning both are nouns.

Word	Noun	Adjective	Verb	Adverb
caffeinism	Yes	No	No	No
poisoning	Yes	No	No	No

As nouns, poisoning is a hypernym of caffeinism; that is, poisoning is a word with a broader meaning than caffeinism:

caffeinism: poisoning resulting from excessive intake of caffeine containing products
poisoning: the physiological state produced by a poison or other toxic substance

Other hypernyms of caffeinism include intoxication, toxic condition.

caffeinism (noun)	poisoning (noun)
poisoning resulting from excessive intake of caffeine containing products	the act of giving poison to a person or animal with the intent to kill
	the physiological state produced by a poison or other toxic substance