epidemic pleurodynia vs diaphragmatic pleurisy

epidemic pleurodynia and diaphragmatic pleurisy both are nouns.

Word	Noun	Adjective	Verb	Adverb
epidemic pleurodynia	Yes	No	No	No
diaphragmatic pleurisy	Yes	No	No	No

As nouns, epidemic pleurodynia and diaphragmatic pleurisy are synonyms defined as:

epidemic pleurodynia and diaphragmatic pleurisy: an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)

Other synonyms of epidemic pleurodynia include Bornholm disease, epidemic myalgia, myosis.

epidemic pleurodynia (noun)	diaphragmatic pleurisy (noun)
an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)	an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)