stank vs odor

stank and odor both are nouns.

Word	Noun	Adjective	Verb	Adverb
stank	Yes	No	No	No
odor	Yes	No	No	No

As nouns, odor is a hypernym of stank; that is, odor is a word with a broader meaning than stank:

stank: A smell of genitals or sex
odor: the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form

Other hypernyms of stank include odour, olfactory perception, olfactory sensation, smell.

stank (noun)	odor (noun)
A smell of genitals or sex	any property detected by the olfactory system
	the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form