circumboreal vs northern

circumboreal and northern both are adjectives.

Word	Noun	Adjective	Verb	Adverb
circumboreal	No	Yes	No	No
northern	No	Yes	No	No

circumboreal (adjective)	northern (adjective)
comprising or throughout far northern regions	situated in regions of the north
	in or characteristic of a region of the United States north of (approximately) the Mason-Dixon line
	coming from the north; used especially of wind
	oriented toward the north