Difference between Peloponnesus and Peloponnesian Peninsula

PELOPONNESUS vs PELOPONNESIAN PENINSULA: NOUN

Ionian sea, Thrace, Dodecanese, Balkan peninsula, Cephalonia, Thessaly, Pieria, Parthia, Edessa, Pylos, Euboea, Epirus, Peloponnesian, Peloponnese, Peloponnesian peninsula

Ionian sea, Thrace, Dodecanese, Balkan peninsula, Cephalonia, Thessaly, Pieria, Parthia, Edessa, Pylos, Euboea, Epirus, Peloponnesian, Peloponnese, Peloponnesian peninsula

Ionians had been expelled from the Peloponnesus by the Dorians and had sought refuge in Athens.
Also the name of a Greek who was the first king of Laconia in Peloponnesus.
Aegean Sea and the Adriatic Sea that connected the Peloponnesus with Northern Greece.
CORINTH, a celebrated city, the capital of Achaia, situated on the isthmus which separates the Peloponnesus from Attica.
Reportedly, Merten placed the stolen property in trunks and sunk them into the waters off Peloponnesus.
Pair them with ouzo, tsiporo, a rakomelo negroni or one of many wines from the Aegean, Peloponnesus and Macedonia.
Peloponnesus and then rededicate themselves to the dismemberment of the Athenian empire.
He is the companion of Telemachus on his journey through the Peloponnesus.
He died from the effects of a snake bite, and was entombed at Cyllene in Peloponnesus.
Athens, was a native of Fhiius in Peloponnesus.

The Peloponnesian peninsula lay behind a narrow isthmuswhere the Spartans and their allies had a barrier against the advancing Persians.
The kingdom of Menelaus, located on the Peloponnesian Peninsula.
Peloponnesian Peninsula and on the fertile plains in Thessaly.
Peloponnesian peninsula to the northern mainland of Greece.