capacity, volume of a container / electrical capacitance or heat capacity

file (collection of papers) / (computing) file

(computing) a filename

(computing) text file

"Clear file folder", a simple plastic sleeve (perhaps only somewhat opaque when a design is printed on it, as is common in promotional events) for holding documents, open on two consecutive sides and closed on two consecutive sides.

volumetric analysis

(computing) filesystem

(computing) File Transfer Protocol, FTP