Fog is a visible mass of cloud water droplets or ice crystals suspended near to the Earth's surface. Smog is a type of air pollutant being a mixture of smoke and fog in the air resulting from a large amount of burning coal.
smog = Smoke + fog it is created when the fog mixes with the pollution in air. Smog looks almost like fog, but is harmful if inhaled for a sufficient period of time.
The word "smog" is a portmanteau of smoke and fog.
The original ten was smog for SMoke + fOG. With more modern events where the effect is caused by the action of sunlight and ozone on chemicals or auto exhaust and fog it is often referred to as Photochemical Smog
smoke + fog = smog
smoke / fog = sm-og = smog
smog
Smog, is the scientific word, for the combination of smoke and fog.
Smoke and fog together generally form smog.
smog
Smog.
smoke and fog = smog.
Smog Is smoke + fog, and that smoke is pollution.