Fun fact: Band-aid is a brand name by J&J company. They're actually adhesive bandages. But, in american we all just grew up calling them band-aids. We also call lip balm "chapstick" (which is another name brand).
According to an online translator, plaster cast translates to "gips". Can a native/proficient speaker confirm/deny this?
Yes, they're called "gips" - which is also our name for the gypsum from which the plaster is made.
I'm sorry, but how exactly does the pronunciation of 'plasteret' differ from the pronunciation of 'plastre'?