i think the answer would be - The longing for connection
Poseidon is angry at odysseus because he blinded the cyclops polyphemus, who is Poseidons son
Although we as the readers see how furious and proud of their beliefs both factions are, we see that they are arguing over something that is the same thing. Similar to arguing whether zebras are white with black stripes or black with white stripes.
I would say true usually it means the water pump has a leak in it but it can also be a few other thing