computer science vs domain name

computer science and domain name both are nouns.

Word	Noun	Adjective	Verb	Adverb
computer science	Yes	No	No	No
domain name	Yes	No	No	No

computer science (noun)	domain name (noun)
the branch of engineering science that studies (with the aid of computers) computable processes and structures	strings of letters and numbers (separated by periods) that are used to name organizations and computers and addresses on the internet