onanism vs withdrawal method

onanism and withdrawal method both are nouns.

Word	Noun	Adjective	Verb	Adverb
onanism	Yes	No	No	No
withdrawal method	Yes	No	No	No

As nouns, onanism and withdrawal method are synonyms defined as:

onanism and withdrawal method: a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation

Other synonyms of onanism include coitus interruptus, pulling out, withdrawal.

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or another) for sexual pleasure	a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation
a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation