Collocations for observation - noun

careful, close, detailed | direct | systematic | casual | empirical, scientific | clinical | astronomical

for ~
She was admitted to hospital for observation.

under ~
The police have had him under observation for several weeks.

~ of
The survey was based on direct observation of over 500 schools.

powers of observation
an artist with acute powers of observation

general | astute, keen, shrewd | interesting

make

~ about
He smiled, and made some observation about the weather.

~ on
her witty observations on life