lead poisoning vs malady

lead poisoning and malady both are nouns.

Word	Noun	Adjective	Verb	Adverb
lead poisoning	Yes	No	No	No
malady	Yes	No	No	No

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

lead poisoning: toxic condition produced by the absorption of excessive lead into the system
malady: impairment of normal physiological function affecting part or all of an organism

Other hypernyms of lead poisoning include illness, sickness, unwellness.

lead poisoning (noun)	malady (noun)
toxic condition produced by the absorption of excessive lead into the system	impairment of normal physiological function affecting part or all of an organism
	any unwholesome or desperate condition