No word defines marriage quite like the word love. But what is love, really? Is it simply an emotion we feel? Or is it something deeper?

In some ways, it’s no surprise that we struggle to understand love. The word we use has become such a generic term that the richness of its meaning is often lost. That’s because in English there’s one word for love with a full spectrum of nuance. You can say, “I love my spouse,” and in the next breath say, “I love potato chips.” Same word. Hopefully, different meanings.

Not so in ancient Greek, which has four basic words for love, each conveying a very particular understanding:

  • Eros: romantic, passionate love.
  • Philia: love between friends and equals.
  • Storge: love between