oral contraceptive pill vs birth control pill

oral contraceptive pill and birth control pill both are nouns.

Word	Noun	Adjective	Verb	Adverb
oral contraceptive pill	Yes	No	No	No
birth control pill	Yes	No	No	No

As nouns, oral contraceptive pill and birth control pill are synonyms defined as:

oral contraceptive pill and birth control pill: a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception

Other synonyms of oral contraceptive pill include anovulant, anovulatory drug, contraceptive pill, oral contraceptive, pill.

oral contraceptive pill (noun)	birth control pill (noun)
a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception	a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception