nickelodeon vs phonograph

nickelodeon and phonograph both are nouns.

Word	Noun	Adjective	Verb	Adverb
nickelodeon	Yes	No	No	No
phonograph	Yes	No	No	No

As nouns, phonograph is a hypernym of nickelodeon; that is, phonograph is a word with a broader meaning than nickelodeon:

nickelodeon: a cabinet containing an automatic record player; records are played by inserting a coin
phonograph: machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically

Other hypernyms of nickelodeon include record player.

nickelodeon (noun)	phonograph (noun)
a cabinet containing an automatic record player; records are played by inserting a coin	machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically