tickler file vs data file

tickler file and data file both are nouns.

Word	Noun	Adjective	Verb	Adverb
tickler file	Yes	No	No	No
data file	Yes	No	No	No

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

tickler file: a file of memoranda or notices that remind of things to be done
data file: a set of related records (either written or electronic) kept together

Other hypernyms of tickler file include file.

tickler file (noun)	data file (noun)
a file of memoranda or notices that remind of things to be done	a set of related records (either written or electronic) kept together