調査【ちょうさ】
investigation, examination, inquiry, enquiry, survey
捜査【そうさ】
search (esp. in criminal investigations), investigation, inquiry, enquiry
検査【けんさ】
inspection (e.g. customs, factory), examination, test, check, scan (e.g. MRI, PET), audit
審査【しんさ】
judging, inspection, examination, investigation, review
査察【ささつ】
inspection (for compliance), investigation (tax, etc.)
巡査【じゅんさ】
police officer, policeman, constable
監査【かんさ】
inspection, audit, judgement, judgment
査定【さてい】
assessment (of value, damages, etc.), revision (of a budget)
査問【さもん】
inquiry, enquiry, hearing