holding vs storage

holding and storage both are nouns.

Word	Noun	Adjective	Verb	Adverb
holding	Yes	No	No	No
storage	Yes	No	No	No

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

Other hyponyms of holding include withholding.

holding (noun)	storage (noun)
the act of retaining something	the commercial enterprise of storing goods and materials
something owned; any tangible or intangible possession that is owned by someone	the act of storing something
	depositing in a warehouse
	a depository for goods
	an electronic memory device
	(computer science) the process of storing information in a computer memory or on a magnetic tape or disk