What is difference between Put the glasses on the table and Put the glasses out on the table?
put something out phrasal verb Lay something out ready for use. ‘she put out glasses and paper napkins’ - ODO
The phrase 'put the glasses on the table' refers simply to placing something somewhere. The phrase on its own doesn't even hint at a reason for placing them there.
On the other hand, 'putting the glasses out on the table' tends to carry the connotation of preparing them for use, for example, as part of the process of setting the table for guests.