onanism vs sexual practice

onanism and sexual practice both are nouns.

Word	Noun	Adjective	Verb	Adverb
onanism	Yes	No	No	No
sexual practice	Yes	No	No	No

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a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation