tearaway vs impetuous

tearaway is a noun but impetuous is not a noun.

Word	Noun	Adjective	Verb	Adverb
tearaway	Yes	Yes	No	No
impetuous	No	Yes	No	No

As adjectives, tearaway and impetuous are synonyms defined as:

tearaway and impetuous: characterized by undue haste and lack of thought or deliberation

Other synonyms of tearaway include brainish, hotheaded, impulsive, madcap.

tearaway (noun)	impetuous (noun)
a reckless and impetuous person

tearaway (adjective)	impetuous (adjective)
characterized by undue haste and lack of thought or deliberation	marked by violent force
	characterized by undue haste and lack of thought or deliberation