Question

write some important difference between electric potential and electric difference ​

Answer 1

electric potential is the potential energy of a unit charge in any electric field. ... whereas Electric potential difference between two points in an Electric field is defined as the amount of work done in moving unit positive charge from one point to another point against the electric force.

Answer 2

 the potential difference is the physical quantity which determines the electical field and therefore the acceleration of charges. While as age differencebetween persons as well as age of one person are both interesting quantities with practical value .

the value of the electical potential as such will eventually only be used to compute potential differences.