"Audits, recounts, canvassing — what does it all mean?
Canvassing is part of the state election certification process that confirms every valid ballot cast is included in the final count. The rules vary by state.
After the canvas is complete, a state can consider an audit. An election audit is a review taken after the polls close to see if the votes were counted properly or the correct procedures were followed. A recount is a specific type of audit that involves the repeat tabulation of the votes to see if the initial count was accurate. This is usually only undertaken in a close election within a certain particularly narrow margin, often 0.5% or less. The margin, rules, and who pays for the recount can vary by state."

https://conservativechoicecampaign.com/audit-canvas-what-do-all-these-election-terms-mean/