this 2 parts of a kettle....

[Eway]

Please have a look at this picture:
http://thecookskitchen.com/pics/med_2484.jpg

I know the handle, the lid, the body, the mouth....
But,
you see,
on top of the lid there's a round, black thing,
what's this part called in English?

And...
you see the part that's shaped like an elephant nose, connecting the body to the mouth where water would be poured out.
Again, what's this elephant-nose like part called? A kettle tube? (no, I don't think so )

[Casiopea]

on top of the lid there's a round, black thing,
what's this part called in English?

It's called a knob or a handle.

what's this elephant-nose like part called? A kettle tube? (no, I don't think so )

It's called a spout.

[RonBee]

Please have a look at this picture:
http://thecookskitchen.com/pics/med_2484.jpg

I know the handle, the lid, the body, the mouth....
But,
you see,
on top of the lid there's a round, black thing,
what's this part called in English?

That's a knob.

And...
you see the part that's shaped like an elephant nose, connecting the body to the mouth where water would be poured out.
Again, what's this elephant-nose like part called? A kettle tube? (no, I don't think so )

The part where the liquid comes out is called the spout.