secrecy vs hiding

secrecy and hiding both are nouns.

Word	Noun	Adjective	Verb	Adverb
secrecy	Yes	No	No	No
hiding	Yes	No	No	No

As nouns, hiding is a hyponym of secrecy; that is, hiding is a word with a more specific, narrower meaning than secrecy:

Other hyponyms of secrecy include covertness, hiddenness, bosom, confidentiality.

secrecy (noun)	hiding (noun)
the trait of keeping things secret	the activity of keeping something secret
the condition of being concealed or hidden	the state of being hidden