Scandinavian Peninsula vs Scandinavia

Scandinavian Peninsula and Scandinavia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scandinavian Peninsula	Yes	No	No	No
Scandinavia	Yes	No	No	No

As nouns, Scandinavian Peninsula and Scandinavia are synonyms defined as:

Scandinavian Peninsula and Scandinavia: the peninsula in northern Europe occupied by Norway and Sweden

Scandinavian Peninsula (noun)	Scandinavia (noun)
the peninsula in northern Europe occupied by Norway and Sweden	a group of culturally related countries in northern Europe; Finland and Iceland are sometimes considered Scandinavian
	the peninsula in northern Europe occupied by Norway and Sweden