Brit vs patrial

Brit and patrial both are nouns.

Word	Noun	Adjective	Verb	Adverb
Brit	Yes	No	No	No
patrial	Yes	No	No	No

As nouns, patrial is a hyponym of Brit; that is, patrial is a word with a more specific, narrower meaning than Brit:

Brit: a native or inhabitant of Great Britain
patrial: a person who has the right to be considered legally a British citizen (by virtue of the birth of a parent or grandparent)

Other hyponyms of Brit include English person.

Brit (noun)	patrial (noun)
a native or inhabitant of Great Britain	a person who has the right to be considered legally a British citizen (by virtue of the birth of a parent or grandparent)