I highly doubt that any one person out there knows all the proper names of all the things in their home. I know that I have referred to a side table as a side table for years before learning that it was actually called a credenza, for example. But until someone with that knowledge came along, how was I to know? Before that, it was just the thing the rubber plant and the lamp lived on.
If you've ever wondered about any of the items you've encountered, you're far from alone. There's a whole community on Reddit just for the purpose of identifying things, r/whatisthisthing. They're amazing at it, too. Just check out some of the odd things they've been challenged to identify, and done so successfully.