ping vs computer science

ping and computer science both are nouns.

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

ping (noun)	computer science (noun)
a sharp high-pitched resonant sound (as of a sonar echo or a bullet striking metal)	the branch of engineering science that studies (with the aid of computers) computable processes and structures

ping (verb)	computer science (verb)
send a message from one computer to another to check whether it is reachable and active
contact, usually in order to remind of something
hit with a pinging noise
make a short high-pitched sound
sound like a car engine that is firing too early