observation

US /ˌɑːb.zɚˈveɪ.ʃən/
UK /ˌɑːb.zɚˈveɪ.ʃən/
"observation" picture
1.

the action or process of observing something or someone carefully or in order to gain information.

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Careful observation of the patient's symptoms is crucial for diagnosis.
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The scientist conducted a long-term observation of the stars.
:
monitoringsurveillancescrutinyexaminationinspection
2.

a remark, statement, or comment based on something one has noticed.

:
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He made an interesting observation about human behavior.
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Her observations were always insightful and to the point.
:
remarkcommentstatementnoteinsight
:
observerobserveobservation car