suckle vs sexual practice

suckle is not a noun while sexual practice is a noun.

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

suckle (noun)	sexual practice (noun)
	activities associated with sexual intercourse

suckle (verb)	sexual practice (verb)
give suck to
suck milk from the mother's breasts