coitus interruptus vs onanism

coitus interruptus and onanism both are nouns.

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

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

coitus interruptus and onanism: a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation

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

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a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation	manual stimulation of the genital organs (of yourself or another) for sexual pleasure
	a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation