All rifles are guns. The term "gun" includes both rifles and handguns. If it's a rifle, it most certainly IS a gun.
This will come as a relief to dictionary editors and to people who sell rifles at gun shows.
Apologies in advance for this...
Two hunters are out in the wild hunting, when out of nowhere, one of the hunters falls to the ground. The other hunter checks if he's breathing, but there's no sign of life, so he calls 911: "Please! Help me! I think my friend is dead!"
The operator says: "OK, OK, calm down, first, we need to make sure if he's really dead". After a short moment of silence, a gunshot is heard, then the frantic hunter says: "OK, now what?!"
Thanks guys for adding some great humor to my morning!