the world > physical sensation > sight and vision > seeing or looking > [noun] > observing or watching > specific (6)
The action or practice of observing celebrities in person.
the activity or process of observing the sky for astronomical or meteorological phenomena, aircraft, etc.; an instance of this.
The activity or hobby of birdwatching.
the activity of gricers, train-spotting.
The activity of observing owls in their natural environment, esp. at night. Cf. birding, n. 3.