onanism vs family planning

onanism and family planning both are nouns.

Word	Noun	Adjective	Verb	Adverb
onanism	Yes	No	No	No
family planning	Yes	No	No	No

As nouns, family planning is a hypernym of onanism; that is, family planning is a word with a broader meaning than onanism:

onanism: a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation
family planning: limiting the number of children born

Other hypernyms of onanism include birth control, birth prevention.

onanism (noun)	family planning (noun)
manual stimulation of the genital organs (of yourself or another) for sexual pleasure	limiting the number of children born
a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation