Sentence:  England were graphically illustrating the huge <WSD>gulf</WSD> in class between the sides and it was no surprise when Lampard added the second just before the half hour. Steven Gerrard found his Liverpool team-mate Glen Johnson and Lampard arrived in the area with perfect timing to glide a header beyond Namasco. 
Meaning of the word marked with <WSD> tags:  A difference, especially a large difference, between groups.