The thing on top of a can is usually a lid.
Pull tab or pull ring .
The thing on top of Toad's head is called a Mush.
It's top fin.
The top of the pyramid is called the 'Apex.'
the thing on top of the oven
A Mixer
One thing the top of a flower does is provide nectar for bees.
the thing on top of the oven
A pointy thing on the top of a tower
alget
The siren....
Its the Antenna.
Yes, i would say it's in the top 50s maybe top 25s for the most seached thing on the internet.