The most common thing on convertibles (the vehicle) is that most of them have automatic transmission when driving. So instead of manually changing gears, it's automatic.
The most common ailment among any humans is the common cold.
They were common among fruit growers in the west.
the most common thing to draw is a bowl of fruit!
Most convertibles have an electric switch that will activate a lever to be able to swing up and back to bring the top down. Some of them have a hand crank where it is going to do the same thing but you are turning a lever to make it go up and back.
Among living things, the most common among the polysaccharide structural carbohydrates is cellulose. Cellulose is the monosaccharide that composes the hard bodies of crabs and insects.
There is no such thing as a most common denominator.
Buddhism
Disease
The most common thing you would measure mass in would be grams and kilograms
There were only a few limited special order convertibles made, these are very rare and one of the most collectible Lincoln Convertibles around!! Very Big Collector Car for Europe also
Most common is the thing that happens most, and least common is the least ocuring thing. For example it is most common to open chess with middle pawn forward. And it is least common to move one of the far pawns first.
Heart diseases are among the most common causes of death.