malodourous vs stinky

malodourous and stinky both are adjectives.

Word	Noun	Adjective	Verb	Adverb
malodourous	No	Yes	No	No
stinky	No	Yes	No	No

As adjectives, malodourous and stinky are synonyms defined as:

Other synonyms of malodourous include ill-smelling, malodorous, unpleasant-smelling.

malodourous (adjective)	stinky (adjective)
having an unpleasant smell	having an unpleasant smell
	very bad