prosthetic vs synthetic

prosthetic

adj
  • artificial, acting as a substitute for part of the body; relating to prosthesis 

noun
  • An artificial replacement for part of the body; a prosthesis, prosthetic device. 

  • An addition to an actor etc.'s body as part of a costume, intended to transform the person's appearance. 

synthetic

adj
  • Artificial, not genuine. 

  • Of, or relating to synthesis. 

  • Produced by synthesis instead of being isolated from a natural source (but may be identical to a product so obtained). 

  • Produced by synthesis, thought to have the same effect as its natural counterpart, but chemically different from it. 

  • Pertaining to the joining of bound morphemes in a word (compare analytic). 

  • Of a language, having a grammar principally dependent on the use of bound morphemes to indicate syntactic relationships (compare analytic). 

noun
  • A synthetic compound. 

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