infantile paralysis vs poliomyelitis

infantile paralysis and poliomyelitis both are nouns.

Word	Noun	Adjective	Verb	Adverb
infantile paralysis	Yes	No	No	No
poliomyelitis	Yes	No	No	No

As nouns, infantile paralysis and poliomyelitis are synonyms defined as:

infantile paralysis and poliomyelitis: an acute viral disease marked by inflammation of nerve cells of the brain stem and spinal cord

Other synonyms of infantile paralysis include acute anterior poliomyelitis, polio.

infantile paralysis (noun)	poliomyelitis (noun)
an acute viral disease marked by inflammation of nerve cells of the brain stem and spinal cord	an acute viral disease marked by inflammation of nerve cells of the brain stem and spinal cord