The process in which a relatively unspecialized cell acquires the specialized features of an enterocyte. [ http://en.wikipedia.org/wiki/List_of_intestinal_epithelial_differentiation_genes http://www.ncbi.nlm.nih.gov/pubmed/16782882 http://purl.obolibrary.org/obo/go/references/0000086 GOC:TermGenie ]