northwestward vs compass point

northwestward and compass point both are nouns.

Word	Noun	Adjective	Verb	Adverb
northwestward	Yes	Yes	No	Yes
compass point	Yes	No	No	No

As nouns, compass point is a hypernym of northwestward; that is, compass point is a word with a broader meaning than northwestward:

northwestward: the compass point midway between north and west; at 315 degrees
compass point: any of 32 horizontal directions indicated on the card of a compass

Other hypernyms of northwestward include point.

northwestward (noun)	compass point (noun)
the compass point midway between north and west; at 315 degrees	any of 32 horizontal directions indicated on the card of a compass

northwestward (adjective)	compass point (adjective)
toward the northwest

northwestward (adverb)	compass point (adverb)
in a northwestward direction