costalgia vs pleuralgia

costalgia and pleuralgia both are nouns.

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

As nouns, costalgia and pleuralgia are synonyms defined as:

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

Other synonyms of costalgia include pleurodynia.

costalgia (noun)	pleuralgia (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