Demand and recovery

deepak v (43 Points)

03 September 2020  
while reading section 73 and 76, I came across the headings of the sections: Tax not paid,short paid AND tax collected but not paid to the government.
I collected Rs 100 as GST but did not pay it to govt. Now isn't this Tax not paid???or is a case of tax collected but not paid to the government?
what is the line of difference??
please explain????