Etymology has the power of history inside it. Through going back, etymology offers us a different way to move forward.
Take the word nostalgia. We use the word in present-day common vernacular to mean a longing for something in the past. We wear college t-shirts, buy period lunchboxes, listen to old music and the like.
But the etymology of nostalgia is much more intense. It comes from the Greek nostos meaning ‘return home’ and algos meaning ‘pain.’ In the late 18th century it was defined as ‘acute homesickness.’
If we say we feel nostalgic for that innocent time when our children were young, it feels somehow shallow, two-dimensional, too simple. It captures the sweet “awww” of reflection, but not the burning ache inside us, unless we are familiar with its etymology.