What is the linguistic root of word companion?

The linguistic root of the word "companion" is the Latin word "com-," which means "with" or "together," and "panis," which means "bread."

Therefore, the word "companion" literally means "one who breaks bread with another." This refers to the ancient tradition of sharing meals as a sign of friendship and camaraderie.

Over time, the meaning evolved to encompass anyone who shares a common journey or purpose, whether that's a physical journey or a journey through life.