(A) Withdrawal method or Coitus interruptus is the method of withdrawal of penis before ejaculation.
(B) Lactational amenorrhoea is the phase of absence of menstruation in which there is complete prevention from conception upto a maximum of six months.
(C) Diaphragm – It is a tubular rubber sheath with a flexible metal or spring ring at the margin which is fitted inside the vagina.
Vault cap – It is a hemispherical dome like rubber or plastic cap with a thick rim which is meant for fitting over the vaginal vault over the cervix.
(D) Hormone releasing IUDS include progestasert and LNG-20.
Progestin is progesterone present in oral contraceptives