alkali poisoning vs poisoning

alkali poisoning and poisoning both are nouns.

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

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

alkali poisoning: poisoning resulting from the ingestion of an alkali compound (as lye or ammonia)
poisoning: the physiological state produced by a poison or other toxic substance

Other hypernyms of alkali poisoning include intoxication, toxic condition.

alkali poisoning (noun)	poisoning (noun)
poisoning resulting from the ingestion of an alkali compound (as lye or ammonia)	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