Storge in the context of "Eros (concept)"

Eros (/ˈɪərɒs/, US: /ˈɛrɒs, irɒs, -oʊs/; from Ancient Greek ἔρως (érōs) 'love, desire') is a concept in ancient Greek philosophy referring to sensual or passionate love, from which the term erotic is derived. Eros has also been used in philosophy and psychology in a much wider sense, almost as an equivalent to "life energy". Psychoanalysis uses the term to describe the universal desire that drives all innate needs (of the id), which according to Freud is identical to Plato's conception. The Protestant philosopher C. S. Lewis posits it as one of the four ancient Greek words for love in Christianity, alongside storge, philia, and agape.