Container as content

In my understanding" Container as content" ,use the container to deliver the message to everyone. Example as lecturer given to us don't make the out look of bottle to be empty, so put the lable on it and put some infomation deliver to the audience.

if it is a bottle without label, It is a container without content, then the audience will not know the brand and what liquid inside

 this is a bottle as well, if without content maybe people will think that it just a mineral water