Papiers collés are collages created only with bits of paper; decoupage, which implies reducing, includes chopping out colored paper or visuals and then gluing them to an object; photomontage uses photographs and pictures from mass-media sources, even though assemblage is a three-dimensional accumulation of objects. Marcel Duchamp's idea of https://www.etsy.com/listing/1418702862/personalized-20th-birthday-gift-for-her