観察 (translations)→ concern contemplation decide estimate inspection look observance observation reconnaissance see survey theory
考察 (translations)→ evolution idea insight
視線 (translations)→ attention eye eyelid gaze glance glare scrutiny sight stare vision
試験 (translations)→ exam touchstone
丹念に (translations)→ assiduously attentively careful carefully clever closely dutifully faithfully industriously methodically meticulously neatly patiently sedulously thoroughly