Naba thapa or Nabaraj thapa are the same name modify according to easyness and suitable to ask. due to the working in the tourism sectors same man naba sometimes become naba guide. Still like a promotion the carrier as a guide and to optimization can say trekking guide in Nepal naba. It is no dout,man name might similar . there might be many naba in Nepal who have diffrent post or same like me as a trekking guide and trekking organizer ,if happen so, you can identify by the email address, photo, date of birth, liec. N. academic carrier etc.