sex activity vs degrade

sex activity is a noun but degrade is not a noun.

Word	Noun	Adjective	Verb	Adverb
sex activity	Yes	No	No	No
degrade	No	No	Yes	No

sex activity (noun)	degrade (noun)
activities associated with sexual intercourse

sex activity (verb)	degrade (verb)
	lower the grade of something; reduce its worth
	reduce the level of land, as by erosion
	reduce in worth or character, usually verbally