spur vs encouragement

spur and encouragement both are nouns.

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

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

spur (noun)	encouragement (noun)
a sharp prod fixed to a rider's heel and used to urge a horse onward	the act of giving hope or support to someone
a railway line connected to a trunk line	the expression of approval and support
a verbalization that encourages you to attempt something	the feeling of being encouraged
tubular extension at the base of the corolla in some flowers
any sharply pointed projection