* Abstract "Telling"
Even a large male gorilla, unaccustomed to tourists, is frightened by people.
* Concrete "Showing"
"A four-hundred-pound male [gorilla], unaccustomed to tourists, will bolt into the forest, trailing a stream of diarrhea, at the mere sight of a person."
WHY?
http://www.ivcc.edu/rambo/eng1001/eng1001_diction.htm