impetuous vs tearaway

impetuous is not a noun while tearaway is a noun.

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

As adjectives, impetuous and tearaway are synonyms defined as:

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

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

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

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