* ἀγάπη (agápē): This is often translated as "agape," and refers to a selfless, unconditional love. It's the highest form of love, often associated with Christian charity and the love of God. It's not necessarily romantic.
* ἔρως (éros): This word refers to passionate, romantic love; often associated with desire and sexual attraction. It's the root of the word "erotic."
* φιλία (philia): This signifies affectionate love, friendship, and brotherly love. It's a deep bond of affection and loyalty, often between friends or family members.
* στοργή (storgē): This denotes familial love, especially the natural affection of parents for their children. It's a deep, instinctive bond.
While these are the most common and significant, there are other words that express aspects of love, but less directly or in more specific contexts. The best choice of word depends entirely on the *type* of love being expressed.