changer vs auto-changer

changer and auto-changer both are nouns.

Word	Noun	Adjective	Verb	Adverb
changer	Yes	No	No	No
auto-changer	Yes	No	No	No

As nouns, changer and auto-changer are synonyms defined as:

changer and auto-changer: an automatic mechanical device on a record player that causes new records to be played without manual intervention

Other synonyms of changer include record changer.

changer (noun)	auto-changer (noun)
an automatic mechanical device on a record player that causes new records to be played without manual intervention	an automatic mechanical device on a record player that causes new records to be played without manual intervention
a person who changes something