farsightedness vs foresight

farsightedness and foresight both are nouns.

Word	Noun	Adjective	Verb	Adverb
farsightedness	Yes	No	No	No
foresight	Yes	No	No	No

As nouns, farsightedness and foresight are synonyms defined as:

farsightedness and foresight: seeing ahead; knowing in advance; foreseeing

Other synonyms of farsightedness include prevision, prospicience.

farsightedness (noun)	foresight (noun)
seeing ahead; knowing in advance; foreseeing	providence by virtue of planning prudently for the future
abnormal condition in which vision for distant objects is better than for near objects	seeing ahead; knowing in advance; foreseeing
a reduced ability to focus on near objects caused by loss of elasticity of the crystalline lens after age 45