menacing vs ominous

menacing and ominous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
menacing	No	Yes	No	No
ominous	No	Yes	No	No

As adjectives, menacing and ominous are synonyms defined as:

menacing and ominous: threatening or foreshadowing evil or tragic developments

Other synonyms of menacing include baleful, forbidding, minacious, minatory, sinister, threatening.

menacing (adjective)	ominous (adjective)
threatening or foreshadowing evil or tragic developments	threatening or foreshadowing evil or tragic developments
	presaging ill fortune