dour vs saturnine

dour and saturnine both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dour	No	Yes	No	No
saturnine	No	Yes	No	No

As adjectives, dour and saturnine are synonyms defined as:

Other synonyms of dour include dark, glowering, glum, moody, morose, sour, sullen.

dour (adjective)	saturnine (adjective)
showing a brooding ill humor	showing a brooding ill humor
stubbornly unyielding	bitter or scornful
harshly uninviting or formidable in manner or appearance