contraceptive device vs prophylactic device

contraceptive device and prophylactic device both are nouns.

Word	Noun	Adjective	Verb	Adverb
contraceptive device	Yes	No	No	No
prophylactic device	Yes	No	No	No

As nouns, contraceptive device and prophylactic device are synonyms defined as:

contraceptive device and prophylactic device: an agent or device intended to prevent conception

Other synonyms of contraceptive device include birth control device, contraceptive, preventative, preventive.

contraceptive device (noun)	prophylactic device (noun)
an agent or device intended to prevent conception	an agent or device intended to prevent conception