plumbism vs unwellness

plumbism and unwellness both are nouns.

Word	Noun	Adjective	Verb	Adverb
plumbism	Yes	No	No	No
unwellness	Yes	No	No	No

As nouns, unwellness is a hypernym of plumbism; that is, unwellness is a word with a broader meaning than plumbism:

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

Other hypernyms of plumbism include illness, malady, sickness.

plumbism (noun)	unwellness (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