What do you call these supporting furniture that are used to display objects in a museum or a tech show? They sometimes have a protective glass and they sometimes do not, I am wondering if they are called the same regardless if they are found in museum or a tech show though like an electronics show where gadgets are displayed.
They may be called "pedestals" (as noted in a comment above) or "stands":
pedestal noun
: the base of an upright structure
// the pedestal of a statue
stand noun
: a frame on or in which something may be placed for support
Here is a website that makes frequent use of the term "pedestal" for these objects: https://www.gaylord.com/c/Pedestal-Cases
The glass case is often called a "vitrine":
: a glass showcase or cabinet especially for displaying fine wares or specimens
These terms may be used either at museums or at expositions (such as tech shows).
(All definitions are from Merriam-Webster online.)
