Question

what is a difference between fogg and smoke

Answer 1

Fog: Droplets of water vapour suspended in the air near the ground. An atmosphere in which visibility is reduced because of a cloud of some substance. Non-pollutant.

Smoke: A hot vapour containing fine particles of carbon being produced by combustion. A cloud of fine particles suspended in a gas. Highly pollutant.

Answer 2

fog is water which condenses to form cloud like structures and are lying very close to the ground of the earth....
Smoke is that thing which is emitted of Vehicles on the roads....emitted by burning impure fuels.....etc ... FOG IS NATURAL DURING WINTERS WHILE SMOKE IS MAN MADE
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now I don't know whether u meant to say SMOKE or SMOG so I must explain to what is meant by SMOG.....

smog is the thick black fog produced by the mixture of FOG AND SMOKE.....
recently Smog occurred in delhi and nearby areas due to high pollution rates...