Cambrian vs European

Cambrian and European both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cambrian	Yes	Yes	No	No
European	Yes	Yes	No	No

As nouns, European is a hypernym of Cambrian; that is, European is a word with a broader meaning than Cambrian:

Cambrian (noun)	European (noun)
a native or resident of Wales	a native or inhabitant of Europe
the period from 544 million to about 500 million years ago; characterized by marine invertebrates

Cambrian (adjective)	European (adjective)
of or relating to or characteristic of Wales or its people or their language	of or relating to or characteristic of Europe or the people of Europe