gas embolism vs unwellness

gas embolism and unwellness both are nouns.

Word	Noun	Adjective	Verb	Adverb
gas embolism	Yes	No	No	No
unwellness	Yes	No	No	No

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

gas embolism: pain resulting from rapid change in pressure
unwellness: impairment of normal physiological function affecting part or all of an organism

Other hypernyms of gas embolism include illness, malady, sickness.

gas embolism (noun)	unwellness (noun)
obstruction of the circulatory system caused by an air bubble as, e.g., accidentally during surgery or hypodermic injection or as a complication from scuba diving	impairment of normal physiological function affecting part or all of an organism
pain resulting from rapid change in pressure