file n	(folder for keeping information)	 
I have a file that I keep all my telephone bills in.
   ,        .
file n	(tool)	 
He used a file to smooth the corner of the wood.
    .
file n	(computer file)	 
Can you send me the file as an attachment in an email?
         ?
I file all my telephone bills together.
      .
file vtr	(smooth with a file)	,   + 
He filed the wood.
  .