computer science vs track-to-track seek time

computer science and track-to-track seek time both are nouns.

Word	Noun	Adjective	Verb	Adverb
computer science	Yes	No	No	No
track-to-track seek time	Yes	No	No	No

computer science (noun)	track-to-track seek time (noun)
the branch of engineering science that studies (with the aid of computers) computable processes and structures	(computer science) the time it takes for a read/write head to move to an adjacent data track