Nostos: desire to return to your homeland (root for nostalgia)
Odysseus’s nostos is essential to remind him to try get home, but things get in the way of his nostos during the wonderings.
Nostos moments
Lotus-Eaters give the crew lotus fruit which makes them forget their nostos
The crew open the windbag when they’re so close to Ithaca
Crew has to remind Odysseus to leave Aeaea after a year
Odysseus gets trapped on Ogygia for 7 years