Question

What is the difference between plan and a sketch

Answer 1

SKETCH-sketches are roughly drawn maps which may not be accurate but could be created quickly
PLAN-very large scale maps which shows lots of details.

Answer 2

okay so basically plan is something which we make in our minds and they aren't illustrated on any kind of paper odscript or whatever.!!, its just the exploration of our brain to find and make a full proof procedure in your mind

Whereas sketch is illustrated form of the plan on a paper or script , etc
                                                 Peace..!!