sexual practice vs body process

sexual practice and body process both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual practice	Yes	No	No	No
body process	Yes	No	No	No

As nouns, body process is a hypernym of sexual practice; that is, body process is a word with a broader meaning than sexual practice:

Other hypernyms of sexual practice include activity, bodily function, bodily process.

sexual practice (noun)	body process (noun)
activities associated with sexual intercourse	an organic process that takes place in the body