Ability to change predefined choice list terminology in ideas portals

We use a custom predefined choice list field to assign product ideas to different product domains in our suite of offerings. The challenge is the terminology we use internally to identify differs from what our customers may experience or know. While I can change the terminology of that field title/description in each of my idea portals, I cannot change the choices available to select.

This allows our customer facing teams and customers to have a streamlined experience with all other communications and places they interact with our company offerings (Community portal, knowledge space, website).

I would like the ability to adjust/change the terminology of the choices in a custom predefined choice list field in idea portals.