northernmost vs north

northernmost is not a noun while north is a noun.

Word	Noun	Adjective	Verb	Adverb
northernmost	No	Yes	No	No
north	Yes	Yes	No	Yes

northernmost (noun)	north (noun)
	a location in the northern part of a country, region, or city
	the cardinal compass point that is at 0 or 360 degrees
	the direction in which a compass needle points
	the direction corresponding to the northward cardinal compass point

northernmost (adjective)	north (adjective)
situated farthest north	situated in or facing or moving toward or coming from the north

northernmost (adverb)	north (adverb)
	in a northern direction