ennoblement vs promotion

ennoblement and promotion both are nouns.

Word	Noun	Adjective	Verb	Adverb
ennoblement	Yes	No	No	No
promotion	Yes	No	No	No

As nouns, promotion is a hypernym of ennoblement; that is, promotion is a word with a broader meaning than ennoblement:

ennoblement (noun)	promotion (noun)
the act of raising someone to the nobility	act of raising in rank or position
the state of being noble	the advancement of some enterprise
	a message issued in behalf of some product or cause or idea or person or institution
	encouragement of the progress or growth or acceptance of something