Hi everyone! I’m an Associate Program Manager on the CXM team here at HubSpot. I’m excited to share that there is a Private Beta available for the ability to rename HubSpot Defined Objects! You can read more about the beta here, and opt into it from the Product Updates page in your account. Please leave feedback here as you use the tool so our teams can continue to add to the feature. 
This beta is available for all Hubs & Tiers.