Ingrian vs Inger

Ingrian and Inger both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ingrian	Yes	No	No	No
Inger	Yes	No	No	No

As nouns, Ingrian and Inger are synonyms defined as:

Ingrian and Inger: a member of western Finnish people formerly living in the Baltic province where Saint Petersburg was built

Other synonyms of Ingrian include Ingerman.

Ingrian (noun)	Inger (noun)
a Finnic language spoken by the Ingrian	a member of western Finnish people formerly living in the Baltic province where Saint Petersburg was built
a member of western Finnish people formerly living in the Baltic province where Saint Petersburg was built