pleurodynia vs costalgia

pleurodynia and costalgia both are nouns.

Word	Noun	Adjective	Verb	Adverb
pleurodynia	Yes	No	No	No
costalgia	Yes	No	No	No

As nouns, pleurodynia and costalgia are synonyms defined as:

pleurodynia and costalgia: pain in the chest caused by inflammation of the muscles between the ribs

Other synonyms of pleurodynia include pleuralgia.

pleurodynia (noun)	costalgia (noun)
pain in the chest caused by inflammation of the muscles between the ribs	pain in the chest caused by inflammation of the muscles between the ribs