gramophone vs phonograph

gramophone and phonograph both are nouns.

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

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

gramophone: an antique record player; the sound of the vibrating needle is amplified acoustically
phonograph: machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically

Other hypernyms of gramophone include record player.

gramophone (noun)	phonograph (noun)
an antique record player; the sound of the vibrating needle is amplified acoustically	machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically