computer science vs write

computer science is a noun but write is not a noun.

Word	Noun	Adjective	Verb	Adverb
computer science	Yes	No	No	No
write	No	No	Yes	No

computer science (noun)	write (noun)
the branch of engineering science that studies (with the aid of computers) computable processes and structures

computer science (verb)	write (verb)
	communicate or express by writing
	record data on a computer
	contact in writing
	produce a literary work
	mark or trace words or symbols on a surface
	write or name the letters that comprise the conventionally accepted form of (a word or part of a word)
	write music
	create code, write a computer program