opening vs inaugural

opening and inaugural both are nouns.

Word	Noun	Adjective	Verb	Adverb
opening	Yes	Yes	No	No
inaugural	Yes	Yes	No	No

opening (noun)	inaugural (noun)
a recognized sequence of moves at the beginning of a game of chess	the ceremonial induction into a position
the act of opening something	an address delivered at an inaugural ceremony (especially by a United States president)
becoming open or being made open
the first of a series of actions
a vacant or unobstructed space that is man-made
an entrance equipped with a hatch; especially a passageway between decks of a ship
an aperture or hole that opens into a bodily cavity
a possible alternative
the initial part of the introduction
the first performance (as of a theatrical production)
a ceremony accompanying the start of some enterprise
an open or empty space in or between things
opportunity especially for employment or promotion

opening (adjective)	inaugural (adjective)
first or beginning	occurring at or characteristic of a formal investiture or induction
	serving to set in motion