You can use drop field fieldname; to drop the field completely
or drop field fieldname from tablename ; to drop the field from just the named table.
You can list multiple fields in a list drop field fieldA, fieldB, fieldC ;
but be aware if any of the fields in the list is missing, then none of the fields are dropped. In this case I prefer to have 3 separate drop statements, that way if a field in missing, the others still will be dropped.
It does not matter if you type drop field or drop fields they both work the same