Illustration

I found the lecture about illustration one of the most interesting ones, because it was very engaging. It was not about chronology of illustration but rather about creating an emotional experience trough an image. The lecturer proposed that illustration is a strategic image making, used within the context of visual communication to convey meaning or concept.

So this is illustration-

 

and this isn't-

So basically illustration is not just a drawing, it is something that engages the audience, something that makes a connection with the viewer.