This is the 10942nd most frequent Catalan word.
seda
Silk.
Here, 'seda' refers to the fabric material derived from silkworms.
La camisa està feta de seda molt suau.
The shirt is made of very soft silk.
In this context, 'seda' refers to the silk-like thread produced by spiders.
He trobat una aranya fent una seda al jardí.
I found a spider making a web in the garden.
In this example, 'seda' is part of a phrase referring to the historical trade route named after silk.