Palaeolithic vs Paleolithic Age

Palaeolithic and Paleolithic Age both are nouns.

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

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

Palaeolithic and Paleolithic Age: 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 Palaeolithic include Paleolithic.

Palaeolithic (noun)	Paleolithic Age (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