Портфолио - интересует буквальное значение на англ. языке: то есть в качестве "собрание работ исполнителя".

вот какая я умная :))

a case for carrying papers, drawings, photographs, maps and other flat documents
the collection of such documents, especially the works of an artist or photographer
the post and the responsibilities of a cabinet minister or other head of a government department
the group of investments and other assets held by an investor