Is there any difference between snöre and kedja ?
Ett snöre = a thread, like what you use to sew clothes or tie things together.
En kedja = a chain, as in the ones that are made of metal.
Not quite, a thread is en tråd. Ett snöre is thicker than that, like a shoestring for example.
I wonder if this is related in any way to the word schedule... It is a very chain like structure!
It's not related. But it's an interesting metaphor!
Related to German "Kette" perhaps?
Yes, they're both derived from Latin catena, and ultimately from Proto-Indo-European. It's a very old word.
Can kedja be used for metaphorical chains as well? Such as a chain of stores (like a franchise) or a chain of people (like a bloodline)?