bends vs caisson disease

bends and caisson disease both are nouns.

Word	Noun	Adjective	Verb	Adverb
bends	Yes	No	No	No
caisson disease	Yes	No	No	No

As nouns, bends and caisson disease are synonyms defined as:

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

bends (noun)	caisson disease (noun)
pain resulting from rapid change in pressure	pain resulting from rapid change in pressure