spur vs projection

spur and projection both are nouns.

Word	Noun	Adjective	Verb	Adverb
spur	Yes	No	Yes	No
projection	Yes	No	No	No

As nouns, projection is a hypernym of spur; that is, projection is a word with a broader meaning than spur:

spur (noun)	projection (noun)
a sharp prod fixed to a rider's heel and used to urge a horse onward	the act of expelling or projecting or ejecting
a railway line connected to a trunk line	the act of projecting out from something
a verbalization that encourages you to attempt something	any structure that branches out from a central support
tubular extension at the base of the corolla in some flowers	the representation of a figure or solid on a plane as it would look from a particular direction
any sharply pointed projection	a planned undertaking
	a prediction made by extrapolating from past observations
	the projection of an image from a film onto a screen
	the acoustic phenomenon that gives sound a penetrating quality
	(psychiatry) a defense mechanism by which your own traits and emotions are attributed to someone else
	any solid convex shape that juts out from something