control function vs control operation

control function and control operation both are nouns.

Word	Noun	Adjective	Verb	Adverb
control function	Yes	No	No	No
control operation	Yes	No	No	No

As nouns, control function and control operation are synonyms defined as:

control function and control operation: an operation that controls the recording or processing or transmission of interpretation of data

control function (noun)	control operation (noun)
an operation that controls the recording or processing or transmission of interpretation of data	an operation that controls the recording or processing or transmission of interpretation of data