guidance counselor vs school counselor

guidance counselor

noun
  • A school counselor. 

school counselor

noun
  • A professional member of an educational team who assists students in their personal, social, academic, and career development aspects of education through services such as individual counseling, small group counseling, and classroom teaching, and provide leadership in educational reform (advocacy); traditionally known as a guidance counselor, although this term is deemed inaccurate by most professionals today. 

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