Eignach is my pen name for illustration. I studied Graphic Design and Advertising in high school in Rome, Italy, with labs in chalcography, lithography, and serigraphy.
I received my BA and MA from the University of Tuscia in Viterbo, Italy, where I studied Literary and Multimedia Communications Studies.
Oxford Dictionary: the origin of the word "illustration" is late Middle English (in the sense "illumination; spiritual or intellectual enlightenment"): via Old French from Latin illustratio(n-), from the verb illustrare.
In conclusion, illustration means something like exemplifying, enlightening, illuminating, explaining, showing, describing, highlighting, or better communicating.