You may have heard the phrase "at a snail's pace" used to refer to
something moving very slowly. How fast does a snail travel? A recent study
measured the speed of garden snails. The table shows how far a snail can
travel when it is moving at its top speed.

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.