data encryption vs encryption

data encryption and encryption both are nouns.

Word	Noun	Adjective	Verb	Adverb
data encryption	Yes	No	No	No
encryption	Yes	No	No	No

As nouns, encryption is a hypernym of data encryption; that is, encryption is a word with a broader meaning than data encryption:

data encryption: (computer science) the encryption of data for security purposes
encryption: the activity of converting data or information into code

Other hypernyms of data encryption include encoding.

data encryption (noun)	encryption (noun)
(computer science) the encryption of data for security purposes	the activity of converting data or information into code