shortsightedness vs myopia

shortsightedness and myopia both are nouns.

Word	Noun	Adjective	Verb	Adverb
shortsightedness	Yes	No	No	No
myopia	Yes	No	No	No

As nouns, shortsightedness and myopia are synonyms defined as:

shortsightedness and myopia: (ophthalmology) eyesight abnormality resulting from the eye's faulty refractive ability; distant objects appear blurred

Other synonyms of shortsightedness include nearsightedness.

shortsightedness (noun)	myopia (noun)
a lack of prudence and care by someone in the management of resources	(ophthalmology) eyesight abnormality resulting from the eye's faulty refractive ability; distant objects appear blurred
(ophthalmology) eyesight abnormality resulting from the eye's faulty refractive ability; distant objects appear blurred