birth prevention vs family planning

birth prevention and family planning both are nouns.

Word	Noun	Adjective	Verb	Adverb
birth prevention	Yes	No	No	No
family planning	Yes	No	No	No

As nouns, birth prevention and family planning are synonyms defined as:

birth prevention and family planning: limiting the number of children born

Other synonyms of birth prevention include birth control.

birth prevention (noun)	family planning (noun)
limiting the number of children born	limiting the number of children born