Birth control and Natural family planning

Birth control noun - Limiting the number of children born.

Natural family planning and birth control are semantically related. In some cases you can replace phrase "Natural family planning" with "Birth control", this phrases are similar.

Natural family planning noun - Any of several methods of family planning that do not involve sterilization or contraceptive devices or drugs; coitus is avoided during the fertile time of a woman's menstrual cycle.

Birth control and natural family planning are semantically related. You can use "Birth control" instead a noun phrase "Natural family planning".