holding vs ownership

holding and ownership both are nouns.

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

As nouns, ownership is a hypernym of holding; that is, ownership is a word with a broader meaning than holding:

Other hypernyms of holding include possession.

holding (noun)	ownership (noun)
the act of retaining something	the act of having and controlling property
something owned; any tangible or intangible possession that is owned by someone	the relation of an owner to the thing possessed; possession with the right to transfer possession to others
	the state or fact of being an owner