The Grammar Nazi Asks: what are the etymological roots of Cancer and Oncology ?

Oh, such a pathetic excuse for a liberal arts major, having been diagnosed with cancer over 3.5 years ago, I’ve not asked myself about the origins of the nouns associated with my disease, specifically the two super-topics of cancer and oncology. I vaguely recall reading them in the book, The Emperor of All Maladies . However, etymology did not garner my interest at that time, since we are, at heart, self interested, I sped up to the concepts most relative to my disease.

Answer: the Greeks gave birth to “cancer”
Karkinos, began, so the most agreed upon etymological story of the word, with Hippocrates about 35 BC. There’s many versions of the crab metaphor given the sluggish Ancient Greek press and of course we’d not know anything about the Library at Alexandria prior to its burning down taking with its embers, all of its words of wisdom. Forget about an Urban Greek BC dictionary to consult. Karkinos stuck as the common umbrella name for all the cancers at that time. And people with Karkinos who mostly presented at a very late stage were told to go back to their huts to die.

Tying up this etymological loose end, occurred about 47 AD by Celsus, a Greco-Roman philosopher, who translated the original Greek into the Latin for crab, or Cancer.

…and then came the etymology of “oncology.”
The word Oncology comes from the Greek as well: onkos as in a burden, or more specifically, a heavy mass. However, Galen, the Greek physician, applied the name onkos to all tumors around 200 AD and thus to the study or treatment of cancer, oncology. In the Greek theater, an onkos is the name for a tragic mask worn by an actor to identify a physical burden. Actors wear onkos to this day when acting in Greek plays. Tragedy? Perhaps…

Oncology recapitulates etymology. Or is it etymology recapitulates oncology… well either way, I now have a vague understanding of the vague understandings that historically exist, whether true or fictionalized.