They are monsters from Greek mythology. Myths describing Scylla can vary but most attribute her six long necks and grisly heads, and then an over abundance of tentacles, teeth, tails, and dog heads attached to her waist. Charybdis is a huge maelstrom, or whirlpool.
Scylla was a six-headed monster and Charybdis was a whirlpool. They both were in the strait of Messina, which separates Sicily form the mainland.
He plugged the sirens ears and avoided the Charybdis
Scylla only ate up six men at a time; Charybdis would wreck the ship by whirlpool.
Scylla was the six headed monster, who took a man for each of her heads.vCharybdis was the whirlpool right next to Scylla's cave.
Scylla is known for eating 6 people at one time and having razor sharp teeth. Charybdis is known for making huge whirl pools by spitting water out at the straight of Messina.
Scylla
For instance Scylla and Charybdis, in the Odyssey.
scylla
Scylla and Charybdis are both Greek monsters. They both killed travelers. Scylla ate travelers and Charybdis drowned them by making whirlpools.
He chooses Scylla over charybdis because if they go to charybdis they would all die, but if they go to Scylla only six would die because Scylla has six heads and six mouths to eat with.
Odysseus chooses to pass by Scylla because, Scylla will only kill 6 men, one for each head. Charybdis will sink the ship, killing everyone. Circe has also advised Odysseus to do choose Scylla. Further, Charybdis is a visible danger, and Odysseus uses Charybdis to encourage his men to pass by quickly. Finally, passing by Scylla and Charybdis is given as the only way for Odysseus to get home from where he is.
charybdis a swirling whirlpool
Circe
He plugged the sirens ears and avoided the Charybdis
Charybdis was one of two guardians of an ocean. Scylla was her sister, and the other guardian.
scylla
Scylla is not a country, but a mythical sea monster with 6 heads. Opposite it is Charybdis
Odysseus chose Scylla, and lost 6 men to her arms.