television
The German word for television is 'Fernseher'. It is a noun that is used to refer to the electronic device used for watching broadcast programs. The word is a compound noun, made up of 'fern', which means 'distant' or 'far', and 'sehen', which means 'to see'. So, the word 'Fernseher' literally means 'far-seer', or a device that allows one to see things that are far away.
I want to buy a new TV.
In this sentence, 'Ich möchte einen neuen Fernseher kaufen.' refers to the speaker expressing a desire to purchase a new television. The word 'Fernseher' is used here as a noun, specifically as the object of the sentence.
The TV is too loud.
This sentence, 'Der Fernseher ist zu laut.' explains that the volume on the television is excessively high. 'Fernseher' is the subject of this sentence.
We have no TV in the bedroom.
In the sentence 'Wir haben keinen Fernseher im Schlafzimmer.' the speaker is stating that there is no television in their bedroom. The word 'Fernseher' is used here as the object associated with a negation.