touch screen vs computer screen

touch screen and computer screen both are nouns.

Word	Noun	Adjective	Verb	Adverb
touch screen	Yes	No	No	No
computer screen	Yes	No	No	No

As nouns, computer screen is a hypernym of touch screen; that is, computer screen is a word with a broader meaning than touch screen:

touch screen: a computer display that enables the user to interact with the computer by touching areas on the screen
computer screen: a screen used to display the output of a computer to the user

Other hypernyms of touch screen include computer display.

touch screen (noun)	computer screen (noun)
a computer display that enables the user to interact with the computer by touching areas on the screen	a screen used to display the output of a computer to the user