Manila folders are used to store documents. But where does these sturdy folded pieces of paper get their name?
The paper originally used for the manila folders was made using abacá hemp, a species of banana native to Philippines also called manila hemp. The manila name in turn coming from the capital city of Philippines.
The city of Manila is the Spanish form it's Filipino name Maynilà that comes from the phrase may-nilà, which means "where indigo is found". The early settlements around the place of the modern Manila city most likely were found to harvest indigo-yielding plants around the region.
Folder is also another common word that has surprisingly obvious etymology, with a twist. It's simply a piece of paper folded in two. But it's folder not folded (or fold). Folder is originally the one "who folds".