Paleolithic Age vs Palaeolithic

Paleolithic Age and Palaeolithic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Paleolithic Age	Yes	No	No	No
Palaeolithic	Yes	No	No	No

As nouns, Paleolithic Age and Palaeolithic are synonyms defined as:

Paleolithic Age and Palaeolithic: second part of the Stone Age beginning about 750,000 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC

Other synonyms of Paleolithic Age include Paleolithic.

Paleolithic Age (noun)	Palaeolithic (noun)
second part of the Stone Age beginning about 750,000 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC	second part of the Stone Age beginning about 750,000 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC