IPA: /pɔːrˈtfoʊlioʊ/
KK: /pɔrˈtfoʊlioʊ/
A collection of investments or a case used to hold documents, pictures, or other materials.
She presented her artwork in a beautiful portfolio during the exhibition.
Portfolio → It is formed from "portare" (meaning to carry) and "folium" (meaning leaf or sheet). The word originally referred to a case for carrying loose sheets of paper or documents.
Think of 'carrying' ('portare') 'sheets' ('folium') of paper — that's why a portfolio is a case for carrying documents.
No commonly confused words.