birth control pill vs oral contraceptive pill

birth control pill and oral contraceptive pill both are nouns.

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

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

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

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

birth control pill (noun)	oral contraceptive 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