Solder as a noun is mostly used in technical and industrial contexts. You'll find solder in an electronics workshop.
Pro Tip 2/3
Not Adhesive
Despite being used to join metals, solder is not an adhesive like glue; it's a filler metal. Unlike glue, solder melts to fill gaps between metals.
Pro Tip 3/3
Not for Strength
Soldering is for making electrical connections, not for bearing loads or heavy weight. Solder isn't strong like a bolt; it's for creating an electric circuit.