unveiling vs beginning

unveiling and beginning both are nouns.

Word	Noun	Adjective	Verb	Adverb
unveiling	Yes	No	No	No
beginning	Yes	Yes	No	No

As nouns, beginning is a hypernym of unveiling; that is, beginning is a word with a broader meaning than unveiling:

Other hypernyms of unveiling include commencement, start.

unveiling (noun)	beginning (noun)
the act of beginning something new	the act of starting something
putting on display for the first time	the first part or section of something
	the event consisting of the start of something
	the place where something begins, where it springs into being
	the time at which something is supposed to begin

unveiling (adjective)	beginning (adjective)
	serving to begin