tearing vs vehement

tearing is a noun but vehement is not a noun.

Word	Noun	Adjective	Verb	Adverb
tearing	Yes	Yes	No	No
vehement	No	Yes	No	No

As adjectives, tearing and vehement are synonyms defined as:

tearing and vehement: marked by extreme intensity of emotions or convictions; inclined to react violently; fervid

Other synonyms of tearing include fierce, trigger-happy, violent.

tearing (noun)	vehement (noun)
shedding tears

tearing (adjective)	vehement (adjective)
marked by extreme intensity of emotions or convictions; inclined to react violently; fervid	marked by extreme intensity of emotions or convictions; inclined to react violently; fervid
	characterized by great force or energy