List the terminologies used in basic blocks.

 Define and use– the three address statement a:=b+c is said to define a and to use b and c.
 Live and dead– the name in the basic block is said to be live at a given point if its value is used
after that point in the program. And the name in the basic block is said to be dead at a given point if
its value is never used after that point in the program.