panel vs sluice box

panel

noun
  • A heap of dressed ore. 

  • One of the districts divided by pillars of extra size, into which a mine is laid off in one system of extracting coal. 

  • A (usually) rectangular section of a surface, or of a covering or of a wall, fence etc. 

  • A list of doctors who could provide limited free healthcare prior to the introduction of the NHS. 

  • A document containing the names of persons summoned as jurors by the sheriff. 

  • A prisoner arraigned for trial at the bar of a criminal court. 

  • A sunken compartment with raised margins, moulded or otherwise, as in ceilings, wainscotings, etc. 

  • A slab or plank of wood used instead of a canvas for painting on. 

  • A soft pad beneath a saddletree to prevent chafing. 

  • A portion of a framed structure between adjacent posts or struts, as in a bridge truss. 

  • A group of tests or assays, a battery. 

  • A type of GUI widget, such as a control panel. 

  • The whole jury. 

  • A board having its edges inserted in the groove of a surrounding frame. 

  • A plain strip or band, as of velvet or plush, placed at intervals lengthwise on the skirt of a dress, for ornament. 

  • An individual frame or drawing in a comic. 

  • One of the faces of a hewn stone. 

  • A portion of text or other material within a book, newspaper, web page, etc. set apart from the main body or separated by a border. 

  • A group of people gathered to judge, interview, discuss etc. as on a television or radio broadcast for example. 

verb
  • To fit (a room etc.) with panels. 

sluice box

noun
  • A box with riffles along the bottom, used to trap heavier gold particles as water washes them and the other material along the box. 

How often have the words panel and sluice box occurred in a corpus of books? (source: Google Ngram Viewer )