Observation
noun, verbal noun
かんそく
監視 （かんし） Observation, Monitor, Keep Watch Over, Surveillance
観測 （かんそく） Observation
観察 （かんさつ、not on WK） Observation, Survey, Watching
People view 観 and measure 測 (judge) their surroundings to come up with Observations 観測
Genghis Khan かん wearing pink socks そく would be a funny Observation.
Many Observations can かん be made about socks そく