Is there a way to change what this says on a Shopify Plus Store?

I am using two more input boxes that I custom built to work with a third party gift card provider and I would like to figure out a way for this input box to only say “Discount Code”.
Is that possible somehow?
Go into your Shopify Admin > Online Store > Themes > click the “…” button/menu next to your theme > select “Edit Default Theme Content”.
At the top of the page, search for “discount code or gift card” and then it should bring up the options which you can edit to change the text shown on checkout.
yeah that was it. I use those option so little that I forget they are even there.
Thank you..
@StephensWorld Can we handle the discount code apply event because I need to show a popup when the user add the wrong discount code
If someone enters an invalid discount code, it will show a message saying that the code is invalid.
You can edit the message that’s shown via the ‘Default Theme Content’ settings.