Can I change it from "Entry" / "Entries" to something else on the widget?

Yes! You can change it from "Entry" / "Entries" to anything you want!

Navigate to create or edit a giveaway. Then, go to the Ways Users Can Enter tab. From here, you'll see an area where it says Display as "Entries", "Points", or something "Totally Customized". You can either select Point / Points or add something custom.

To add something custom, you will need to put in the singular and plural version of the word. For example:

Ticket / Tickets

Chip / Chips

Cat / Cats

Literarily anything you want...