Honey bees look like this:
A swarm of Honey Bees looks like this – only Honey Bees do this:
Whereas these are Bumble Bees – usually seen on their own:
The White-Tailed Bumblebee is another common Bumblebee:
Wasps look different – their nest is made of paper rather than wax:
The hornet is wasp-like but somewhat bigger:
Some kinds of fly look like bees, such as the Dronefly and Hoverfly: