computing vs check bit

computing and check bit both are nouns.

Word	Noun	Adjective	Verb	Adverb
computing	Yes	No	No	No
check bit	Yes	No	No	No

computing (noun)	check bit (noun)
the procedure of calculating; determining something by mathematical or logical methods	(computer science) a bit that is used in an error detection procedure in which a 0 or 1 is added to each group of bits so that it will have either an odd number of 1's or an even number of 1's; e.g., if the parity is odd then any group of bits that arrives with an even number of 1's must contain an error
the branch of engineering science that studies (with the aid of computers) computable processes and structures