drop-down menu vs computer menu

drop-down menu and computer menu both are nouns.

Word	Noun	Adjective	Verb	Adverb
drop-down menu	Yes	No	No	No
computer menu	Yes	No	No	No

As nouns, computer menu is a hypernym of drop-down menu; that is, computer menu is a word with a broader meaning than drop-down menu:

drop-down menu: a menu of options that appears below the item when the computer user clicks on it
computer menu: (computer science) a list of options available to a computer user

Other hypernyms of drop-down menu include menu.

drop-down menu (noun)	computer menu (noun)
a menu of options that appears below the item when the computer user clicks on it	(computer science) a list of options available to a computer user