malicious mischief vs vandalism

malicious mischief and vandalism both are nouns.

Word	Noun	Adjective	Verb	Adverb
malicious mischief	Yes	No	No	No
vandalism	Yes	No	No	No

As nouns, malicious mischief and vandalism are synonyms defined as:

malicious mischief and vandalism: willful wanton and malicious destruction of the property of others

Other synonyms of malicious mischief include hooliganism.

malicious mischief (noun)	vandalism (noun)
willful wanton and malicious destruction of the property of others	willful wanton and malicious destruction of the property of others