longsightedness vs hyperopia

longsightedness and hyperopia both are nouns.

Word	Noun	Adjective	Verb	Adverb
longsightedness	Yes	No	No	No
hyperopia	Yes	No	No	No

As nouns, longsightedness and hyperopia are synonyms defined as:

longsightedness and hyperopia: abnormal condition in which vision for distant objects is better than for near objects

Other synonyms of longsightedness include farsightedness, hypermetropia, hypermetropy.

longsightedness (noun)	hyperopia (noun)
abnormal condition in which vision for distant objects is better than for near objects	abnormal condition in which vision for distant objects is better than for near objects