mug book vs data file

mug book and data file both are nouns.

Word	Noun	Adjective	Verb	Adverb
mug book	Yes	No	No	No
data file	Yes	No	No	No

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

mug book: a file of mug shots (pictures of criminals that are kept on file by the police)
data file: a set of related records (either written or electronic) kept together

Other hypernyms of mug book include file.

mug book (noun)	data file (noun)
a file of mug shots (pictures of criminals that are kept on file by the police)	a set of related records (either written or electronic) kept together