first balcony vs balcony

first balcony and balcony both are nouns.

Word	Noun	Adjective	Verb	Adverb
first balcony	Yes	No	No	No
balcony	Yes	No	No	No

As nouns, balcony is a hypernym of first balcony; that is, balcony is a word with a broader meaning than first balcony:

first balcony: first or lowest balcony
balcony: an upper floor projecting from the rear over the main floor in an auditorium

first balcony (noun)	balcony (noun)
first or lowest balcony	a platform projecting from the wall of a building and surrounded by a balustrade or railing or parapet
	an upper floor projecting from the rear over the main floor in an auditorium