unveiling vs launching

unveiling and launching both are nouns.

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

As nouns, unveiling and launching are synonyms defined as:

Other synonyms of unveiling include debut, entry, first appearance, introduction.

unveiling (noun)	launching (noun)
the act of beginning something new	the act of propelling with force
putting on display for the first time	the act of beginning something new
	the act of moving a newly built vessel into the water for the first time