pedestal vs underside

pedestal

noun
  • The base or foot of a column, statue, vase, lamp. 

  • An iron socket, or support, for the foot of a brace at the end of a truss where it rests on a pier. 

  • The measured value when no input signal is given. 

  • A casting secured to the frame of a truck of a railcar and forming a jaw for holding a journal box. 

  • The central part of the cockpit, between the pilots, where various controls are located. 

  • A place of reverence or honor. 

  • a pedestal coil, group of connected straight pipes arranged side by side and one above another, used in a radiator. 

  • A ground-level housing for a passive connection point for underground cables. 

  • A pillow block; a low housing. 

verb
  • To set or support on (or as if on) a pedestal. 

underside

noun
  • The side that is below or underneath, the bottom. 

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