Around where I live (https://www.waze.com/editor/?lon=151.13898&lat=-33.78844&zoom=3) a large number of avenues on the map use the abbreviation “Av” rather than “Ave”
The voice navigation says “Avenue” when the map has “Ave”.
However, the voice navigation says “Av” when the map has “Av” which sounds… odd…
Not sure why the maps have a mix of Av and Ave but the voice navigation should expand both of these to “Avenue” when giving directions.