shadowiness vs shadiness

shadowiness and shadiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
shadowiness	Yes	No	No	No
shadiness	Yes	No	No	No

As nouns, shadowiness and shadiness are synonyms defined as:

shadowiness and shadiness: relative darkness caused by light rays being intercepted by an opaque body

Other synonyms of shadowiness include shade.

shadowiness (noun)	shadiness (noun)
relative darkness caused by light rays being intercepted by an opaque body	questionable honesty or legality
	relative darkness caused by light rays being intercepted by an opaque body