stock issue vs issuance

stock issue and issuance both are nouns.

Word	Noun	Adjective	Verb	Adverb
stock issue	Yes	No	No	No
issuance	Yes	No	No	No

As nouns, issuance is a hypernym of stock issue; that is, issuance is a word with a broader meaning than stock issue:

stock issue: (corporation law) the authorization and delivery of shares of stock for sale to the public or the shares thus offered at a particular time
issuance: the act of providing an item for general use or for official purposes (usually in quantity)

Other hypernyms of stock issue include issue, issuing.

stock issue (noun)	issuance (noun)
(corporation law) the authorization and delivery of shares of stock for sale to the public or the shares thus offered at a particular time	the act of providing an item for general use or for official purposes (usually in quantity)