skein, skene

Skein or skein means a length of yarn or thread, wound around a spool or reel, or something that is wound around in circles in this way--
I thought I had another skein of yarn; I'll have to make this a vest instead of a sweater.
The kitten got a skein of yarn out of the basket, and made a mess of it.

Skene or skene means the structure that forms the backdrop for players on a stage--
The skene should be painted with a temple and some trees.
We left the skene a blank wall; the audience will have to imagine the setting.

Now that you know that, you can say--
"When the witch unravels the skein of yarn, the skene should be moved forward a bit, making the stage smaller as the yarn runs out."

Note--"skean" means a knife or dagger once used in Scotland or Ireland--
He wore a kilt, with a skean tucked in his sock.

seen, scene

Seen or seen is a past participle of "see". It is always used with the appropriate form of "have" or "be"--
I have seen this movie before.
The movie was seen by a lot of people.
Have you seen my cat?

Scene or scene ( rhymes with seen ) means the place where something happens--
The criminal always returns to the scene of the crime.
Scene may mean what is present to view--
The house looked like the scene of a disaster.
A scene may mean a public display of emotion, as in an argument--
Quiet! Don't make a scene.
A scene may be literary--a part of a play, or an episode from a movie, TV show or novel--
There is a sword fight in Scene 2.
We'll have to do that scene over again.

Now that you know that, you can say--
"I have never seen anyone make such a scene!"
"Have you seen Scene 3 ?"

Note--scenery describes what we like to look at when we go on vacation, such as the beautiful scenery in a park--
They took a lot of photos of the beautiful scenery.
Scenery also means the set that has been devised for a stage show or film--the cardboard trees and painted backdrop--
They made all of the scenery out of plywood, cardboard and paint.
Note 2--a skein ( pronounced skeen ) is a hank of yarn, or a package of yarn sold that way--
I need another skein of red yarn to finish this sweater.