sensory system vs sight

sensory system and sight both are nouns.

Word	Noun	Adjective	Verb	Adverb
sensory system	Yes	No	No	No
sight	Yes	No	Yes	No

As nouns, sight is a hyponym of sensory system; that is, sight is a word with a more specific, narrower meaning than sensory system:

sensory system (noun)	sight (noun)
the body's system of sense organs	the act of looking or seeing or observing
a particular sense	the ability to see; the visual faculty
	an instance of visual perception
	the range of vision
	a range of mental vision
	a place of interest, especially to visitors
	anything that is seen
	(often followed by `of') a large number or amount or extent

sensory system (verb)	sight (verb)
	catch sight of; to perceive with the eyes
	take aim by looking through the sights of a gun (or other device)