сок (Komi-Zyrian) comes from Russian сок, from Old East Slavic сокъ, from Proto-Slavic sǫkъ, from Proto-Balto-Slavic sakás, from Proto-Indo-European sokʷós, from Proto-Indo-European sekʷ- — to follow; to see; to say.
сок (Komi-Zyrian): juice