It is what ever you call an assault weapon. Automatic weapons? Well automatic weapons (or as we said as kids "machine guns") have been strictly regulated since the 1930s in the United States.
The above rifle shoots a round every time you pull the trigger. That's called semi automatic. Most handguns now a days are semi automatic (going back to Browning's 1911 .45). Many hunting rifles are semi automatic. Many shotguns do the same. A revolver is not strictly speaking semi automatic, but it repeats rounds as you pull the trigger too.
There is certainly no universal agreement.
h/t to Wombat Socho at TOM