the holder of a thread is called a spool
A bobbin or a Spool
Spool pins are used on sewing machines to hold the spool of thread. Most or vertical, some that are horizontal use a spool cap to secure the spool of thread. Some machine come with spool nets to cover the spool to ensure the thread enter the machine evenly. Some machines come with an extra spool pin that fits into a small hole on the top of the machine to hold a second spool of thread.
A spool of thread is very cheap. Spools of thread can be as cheap as a dollar or less a spool.
place spool of thread on spool pin
The thread moves from the spool through the needle to make stitches on a sewing machine. The thread take-up lever is what feeds the thread from the spool to the needle as it moves up and down.
The smaller thread feed at the bottom of the machine is called the bobbin.
a spoolcase is something that you use in sewing or when you sew you put the spool into a spoolcase but you must make sure the spool is filled up with thread then you can start sewing only if you have a long piece of thread in the spool!!
The word "spool" can function as a noun or a verb. It is a noun when referring to the object that holds thread, wire, or film, and a verb when describing the act of winding or unwinding thread onto a spool.
A collective noun for thread is a spool of thread.
A bobbin or a Spool
Thread