pairing vs sexual practice

pairing and sexual practice both are nouns.

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

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

Other hypernyms of pairing include sex, sex activity, sexual activity.

pairing (noun)	sexual practice (noun)
the act of pairing a male and female for reproductive purposes	activities associated with sexual intercourse
the act of grouping things or people in pairs