The metal pieces that hold a truss together are commonly referred to as connectors or truss connectors. These connectors can include various types of fasteners, such as bolts, plates, and brackets, designed to join the individual members of the truss securely. In some contexts, they may also be called gusset plates, especially when they are flat metal plates used to connect the joints of a truss.
When metal is linked together, it is often referred to as a "metal alloy" if it involves different types of metals combined. If the linking refers to physical connections, it might be called "metal chain" or "metal linkage." In the context of jewelry or construction, linked metal pieces may also be referred to as "metal fittings" or "metal connections."
When two pieces of fabric are sewn together a seam is formed.
People call it "tangents".
A seam.
components
Assembled can be defined as to bring or call together into a group or whole. Assembled can also be defined as fitting parts and pieces together or to setup parts and pieces.
There are several things used to hold the pieces together: cooper foil, a type of putty and lead came. Yes, it is a funny word.
Lamination is the gluing together of sheets of wood .
There are several methods for joining metal to metal using heat: Brazing and soldering are used to join two pieces of metal without melting them, by melting a different metal with a lower melting point, and letting it flow between the pieces as a joint. (Brazing is generally done at a higher temperature than soldering.) A person who does this could be called a solderer or a brazer, (but this is not a common term). Welding is used to join two pieces of metal by melting them at the join and sometimes an additional filler piece is added. A person who does this is called a welder.
Radioactive decay happens when an unstable atom cannot hold itself together, and pieces of it fly out. The pieces include the emissions we call radiation.
Case
It is used to connect two pieces of conduit together. Since you did not know the answer, I would call an electrician to work on your project.