Modern furniture usually has a lacquered finish, so I provide a service to relacquer tables, chairs etc..
Lacquer can be applied to late Victorian, Edwardian and most modern pieces. Using lacquer instead of French polish gives you a much harder wearing surface that will not mark nearly so easily. Cleaning requires just a damp cloth and occasionally some wax.
French polish on the other hand would be used on the more special pieces and those that would benefit from the more delicate finish that it provides. This finish will mark very easily from moisture and heat.
The piano has been French polished - the sideboard and dining table are lacquered.