Here's two similar BUT NOT modeling terms that will get me going every time:
'Models' and 'Kits.'
They are not synonyms and they are not interchangeable.
A "model" is a representation of a real article, (in our realm, a vehicle or aircraft or watercraft or motorcycle, etc.).
A "kit" is a group of individual parts that, once assembled, form a model. But once they parts are assembled, it is no longer a kit. It is a model.
As an example, it drives me nuts to hear someone say "I brought several kits to enter" at a model car show registration. No you didn't, you brought several models to enter. This is not a swap meet. We do not display or judge boxes of unassembled parts. There are no kits on the tables. Those are models.
Like saying an egg is a chicken. No it's not. It could be ... but it isn't yet. And once it's a chicken, it cannot be an egg again.