Difference Between Bandwidth and Data Transfer Rate

Bandwidth	Data Rate
It is the number of bits per second that a link can send or receive.	It is the speed of data transmission.
Maximum number of bits can be transfer per second.	Number of bits transferred per second
Normally it is measured in bps, Mbps or Gbps.	It is normally measured in Mbps or MBps.
It refers to maximum data transmission speed.	It refers to the actual data transmission speed.
It is physical layer property in OSI model.	While it is common in all layers.
It shows the capacity of the channel.	It shows the present speed of data transmission.
It does not depend on properties of sender or receiver.	While it gets affected by sender or receiver.
It is the potential of the data that is to be transferred in a specific period.	It is the amount of data transmitted during a specified time period over a network.