semiprofessional vs unskilled

semiprofessional

adj
  • Of or pertaining to a semiprofession. 

  • Paid as a professional but on a part-time basis. 

  • Of close to professional standard; prosumer. 

noun
  • A semiprofessional person. 

unskilled

adj
  • Of a job: not requiring skill or training. 

  • Of a person or workforce: not having a skill or technical training. 

  • Of a made object: inexpertly made or showing a lack of skill. 

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