PyQt:How do i set different header sizes for individual headers?

I have a list containing lists with two items,a word and a number.This list will be presented using a tablewidget.

My aim is to produce a table with two columns and with the neccessary rows,but the header of the column which will have the words should be larger than the numbers column.

I could use resize columns to content,but I want the table without the white empty white space around the table,after the resize.

For the creation of the gui code I am using QtDesigner.Thanks.