fettle vs fitness

fettle

noun
  • A state of proper physical condition; kilter or trim. 

  • Sand used to line a furnace. 

  • One's mental state; spirits. 

  • a seam line left by the meeting of mold pieces. 

  • The act of fettling. 

  • A person's mood or state, often assuming the worst. 

verb
  • To make preparations; to put things in order; to do trifling business. 

  • To line the hearth of a furnace with sand prior to pouring molten metal. 

  • To sort out, to fix, to mend, to repair. 

  • To be upset or in a bad mood. 

  • In ceramics, to remove (as by sanding) the seam lines left by the meeting of two molds. 

fitness

noun
  • The condition of being fit, suitable or appropriate. 

  • The condition of being attractive, fanciable or beautiful. 

  • The cultivation of an attractive and/or healthy physique. 

  • An organism's or species' degree of success in finding a mate and producing offspring. 

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