うかがう (translations)→ alert challenge check discern eye glance look note peer regard reveal scout search see size study trouble watch wonder
確認する (translations)→ claim conclude confirm decide find recognize sure verify vouch
研究する (translations)→ analyze learn
捜索する (translations)→ examine sleuth toss
調査 (translations)→ case enquiry inquiry inquisition investigation investigative operation quest report research scouting survey
調査する (translations)→ scrutinize
チェックする (translations)→ inspect keep tabs on review