air embolism vs bends

air embolism and bends both are nouns.

Word	Noun	Adjective	Verb	Adverb
air embolism	Yes	No	No	No
bends	Yes	No	No	No

As nouns, air embolism and bends are synonyms defined as:

Other synonyms of air embolism include aeroembolism, caisson disease, decompression sickness, gas embolism.

air embolism (noun)	bends (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	pain resulting from rapid change in pressure
pain resulting from rapid change in pressure