Thracian vs European

Thracian and European both are nouns.

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

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

Thracian (noun)	European (noun)
a Thraco-Phrygian language spoken by the ancient people of Thrace but extinct by the early Middle Ages	a native or inhabitant of Europe
an inhabitant of ancient Thrace

Thracian (adjective)	European (adjective)
of or relating to Thrace or its people or culture	of or relating to or characteristic of Europe or the people of Europe