stereoscopy vs stereoscopic vision

stereoscopy and stereoscopic vision both are nouns.

Word	Noun	Adjective	Verb	Adverb
stereoscopy	Yes	No	No	No
stereoscopic vision	Yes	No	No	No

As nouns, stereoscopy and stereoscopic vision are synonyms defined as:

stereoscopy and stereoscopic vision: three-dimensional vision produced by the fusion of two slightly different views of a scene on each retina

stereoscopy (noun)	stereoscopic vision (noun)
three-dimensional vision produced by the fusion of two slightly different views of a scene on each retina	three-dimensional vision produced by the fusion of two slightly different views of a scene on each retina