Ancient Greek had four main words for "love", each with distinct meaning:
Agape is "true" unconditional love, as felt towards a beloved (or by God for mankind), encouraging one towards self-sacrifice.
Eros is sensual love, brimming with desire and longing.
Philia is virtuous, disinterested love or admiration, felt from afar or for one's friends and family.
Storge is affectionate love, as felt by parents for their children.
To 'frot' is to rub one penis against another, usually until ejaculation. Frotting has been advocated as a safer alternative to anal sex. It derives from the French 'frotter' – to rub – and came into circulation with Bill Weintraub's article "Frot: The Next Sexual Revolution".
Read more about frottage here.
Listen on Spotify:
The Liebestod (love-death) from Tristan and Isolde by Richard Wagner
Piano Sonata in B minor by Franz Liszt