reward vs ennoble

reward is a noun but ennoble is not a noun.

Word	Noun	Adjective	Verb	Adverb
reward	Yes	No	Yes	No
ennoble	No	No	Yes	No

As verbs, ennoble is a hyponym of reward; that is, ennoble is a word with a more specific, narrower meaning than reward:

Other hyponyms of reward include drink, pledge, salute, toast, wassail, dignify, decorate.

reward (noun)	ennoble (noun)
an act performed to strengthen approved behavior
benefit resulting from some event or action
the offer of money for helping to find a criminal or for returning lost property
a recompense for worthy acts or retribution for wrongdoing
payment made in return for a service rendered

reward (verb)	ennoble (verb)
strengthen and support with rewards	give a title to someone; make someone a member of the nobility
act or give recompense in recognition of someone's behavior or actions	confer dignity or honor upon
bestow honor or rewards upon