phonograph vs record player

phonograph and record player both are nouns.

Word	Noun	Adjective	Verb	Adverb
phonograph	Yes	No	No	No
record player	Yes	No	No	No

As nouns, phonograph and record player are synonyms defined as:

phonograph and record player: machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically

phonograph (noun)	record player (noun)
machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically	machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically