査 - investigate

market research

inspection (for compliance); investigation (tax, etc.)

fact-finding investigation; investigation into actual conditions; fact-finding survey

inspection (e.g. customs, factory); examination; test; check; scan (e.g. MRI, PET); audit

probe; inquiry; enquiry; investigation

search (esp. in criminal investigations); investigation; inquiry; enquiry

(police) investigator

auditor; inspector

(national) census

judging; inspection; examination; investigation; review

attitude survey; opinion poll

blood test; hemanalysis