audit vs scrutinize

audit is a noun but scrutinize is not a noun.

Word	Noun	Adjective	Verb	Adverb
audit	Yes	No	Yes	No
scrutinize	No	No	Yes	No

As verbs, audit and scrutinize are synonyms defined as:

audit and scrutinize: examine carefully for accuracy with the intent of verification

Other synonyms of audit include inspect, scrutinise.

audit (noun)	scrutinize (noun)
a methodical examination or review of a condition or situation
an inspection of the accounting procedures and records by a trained accountant or CPA

audit (verb)	scrutinize (verb)
attend academic courses without getting credit	examine carefully for accuracy with the intent of verification
examine carefully for accuracy with the intent of verification	to look at critically or searchingly, or in minute detail