lechery vs sex

lechery and sex both are nouns.

Word	Noun	Adjective	Verb	Adverb
lechery	Yes	No	No	No
sex	Yes	No	Yes	No

As nouns, sex is a hypernym of lechery; that is, sex is a word with a broader meaning than lechery:

Other hypernyms of lechery include sex activity, sexual activity, sexual practice.

lechery (noun)	sex (noun)
unrestrained indulgence in sexual activity	activities associated with sexual intercourse
	the properties that distinguish organisms on the basis of their reproductive roles
	all of the feelings resulting from the urge to gratify sexual impulses
	either of the two categories (male or female) into which most organisms are divided

lechery (verb)	sex (verb)
	tell the sex (of young chickens)
	to evoke sexual feelings