Bee vs Wasp, what's the difference?

A couple of notable differences between bees and wasps... 

Once they find you, bees are just curious, hoping you are a source of nectar... rarely stinging when away from their hive.  Wasps, however, may want a bite, depending on how close you are to their home or how threatened they feel. Flailing at them is definitely threatening and grounds (in their minds) to sting.

Bees congregate in what can be huge colonies, up to tens of thousands of bees, while wasps tend to be less communal in their living patterns. 

Honeybees are responsible for pollinating approximately 80% of all fruit, vegetable and seed crops in the U.S.   Wasps are not pollinators.