perceptiveness vs insight

perceptiveness and insight both are nouns.

Word	Noun	Adjective	Verb	Adverb
perceptiveness	Yes	No	No	No
insight	Yes	No	No	No

As nouns, perceptiveness and insight are synonyms defined as:

Other synonyms of perceptiveness include perceptivity.

perceptiveness (noun)	insight (noun)
the quality of insight and sympathetic understanding	grasping the inner nature of things intuitively
delicate discrimination (especially of esthetic values)	the clear (and often sudden) understanding of a complex situation
perception of that which is obscure	clear or deep perception of a situation
a feeling of understanding	a feeling of understanding