saturnine vs glowering

saturnine and glowering both are adjectives.

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

As adjectives, saturnine and glowering are synonyms defined as:

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

saturnine (adjective)	glowering (adjective)
showing a brooding ill humor	showing a brooding ill humor
bitter or scornful