second balcony vs peanut gallery

second balcony and peanut gallery both are nouns.

Word	Noun	Adjective	Verb	Adverb
second balcony	Yes	No	No	No
peanut gallery	Yes	No	No	No

As nouns, second balcony and peanut gallery are synonyms defined as:

second balcony and peanut gallery: rearmost or uppermost area in the balcony containing the least expensive seats

Other synonyms of second balcony include family circle, upper balcony.

second balcony (noun)	peanut gallery (noun)
rearmost or uppermost area in the balcony containing the least expensive seats	rearmost or uppermost area in the balcony containing the least expensive seats
	(figurative) people whose criticisms are regarded as irrelevant or insignificant (resembling uneducated people who throw peanuts on the stage to express displeasure with a performance)