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Pennsylvanian period vs Carboniferous

Carboniferous vs Pennsylvanian period

Pennsylvanian period and Carboniferous both are nouns.

Word NounAdjectiveVerbAdverb
Pennsylvanian period Yes No No No
Carboniferous Yes No No No
Pennsylvanian period (noun) Carboniferous (noun)
the period from 310 million to 280 million years ago; characterized by warm climate and swampy land the period from 345 million to 280 million years ago
Difference between Pennsylvanian period and Carboniferous

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