#professor  someone who is a member of the faculty at a college or university
  supertype:  academic__academician__faculty_member__facultymember  an educator who works at a college or university
  member of:  faculty
  subtype:  assistant_professor__assistantprofessor  a teacher or lower rank than an associate professor
  subtype:  associate_professor__associateprofessor  a teacher lower in rank than a full professor but higher than an assistant professor
  subtype:  full_professor  a professor of the highest rank
  subtype:  Regius_professor  holder of a British professorship created by a royal patron
  subtype:  visiting_professor  a professor visiting another college or university to teach for a limited time

No statement uses or specializes professor; click here to add one.