Advisor
person with more and deeper knowledge in a specific area
Solicitor General for Scotland
White House Counsel
court counsel
foreign government advisor in Meiji Japan
Chief Government Architect of the Netherlands
military advisor
legal counsel
travel agent
jurist-consultant
Bokor
employment counsellor
Pensionary
spiritual director
careers advisor
chief medical officer
McKenzie friend
financial adviser
tax advisor
NASA Chief Scientist
council member
methodological advisor
technical advisor
political adviser