glowering vs dour

glowering and dour both are adjectives.

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

As adjectives, glowering and dour are synonyms defined as:

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

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