That’s really interesting as the as the word ’sim’ in modern farsi (persian) also mean cord or line. It seems according to wiktionary (https://en.m.wiktionary.org/wiki/s%C3%ADma#Icelandic) that the Word has Proto-Indo-European roots which is the common ancestor of farsi and European languages.

I wonder if it’s possible to introspect or query the model and find out about the etymologi of words. I suspect more context like the phonetic version of each word is needed to make that final connection not just the semantic embedding.