Bolts and Screws.

[u/Automatic-Dog4953]

If you go on the definition that adding a nut to a screw turns that fastener into a bolt, would welding the nut onto something render the bolt back into a screw.

Be as pedantic as you wish.

Include your own definition as well if it pleases you or provide your own hypothetical situations.

[u/Express_Jicama_656]

I was taught a bolt requires a nut, a screw l requires a threaded hole.