computer science vs ping

computer science and ping both are nouns.

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

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

computer science (verb)	ping (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