Question

define electrostatic force in your words

Answer 1

the force exert by  charged object to uncharged object is called electrostatic force

NOTE --- the electrostatic force is that it can be either attractive or repulsive, unlike the gravitational force which is only ever attractive.

Answer 2

Coulomb force, also calledelectrostatic force or Coulomb interaction, attraction or repulsion of particles or objects because of their electric charge. ... Two like electriccharges, both positive or both negative, repel each other along astraight line between their centres.