onanism vs coitus interruptus

onanism and coitus interruptus both are nouns.

Word	Noun	Adjective	Verb	Adverb
onanism	Yes	No	No	No
coitus interruptus	Yes	No	No	No

As nouns, onanism and coitus interruptus are synonyms defined as:

onanism and coitus interruptus: a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation

Other synonyms of onanism include pulling out, withdrawal, withdrawal method.

onanism (noun)	coitus interruptus (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or another) for sexual pleasure	a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation
a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation