audit

(noun) an inspection of the accounting procedures and records by a trained accountant or CPA. Synonyms: audited account.

(noun) a methodical examination or review of a condition or situation. Examples: "He made an audit of all the plants on his property." "An energy efficiency audit." "An email log audit."

(verb) examine carefully for accuracy with the intent of verification. Synonyms: scrutinize, scrutinise, inspect. Example: "Audit accounts and tax returns."

(verb) attend academic courses without getting credit.