sight vs sensory system

sight and sensory system both are nouns.

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

As nouns, sensory system is a hypernym of sight; that is, sensory system is a word with a broader meaning than sight:

Other hypernyms of sight include modality, sense modality, exteroception.

sight (noun)	sensory system (noun)
the act of looking or seeing or observing	the body's system of sense organs
the ability to see; the visual faculty	a particular sense
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

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