map collection vs book of facts

map collection and book of facts both are nouns.

Word	Noun	Adjective	Verb	Adverb
map collection	Yes	No	No	No
book of facts	Yes	No	No	No

As nouns, book of facts is a hypernym of map collection; that is, book of facts is a word with a broader meaning than map collection:

Other hypernyms of map collection include reference, reference book, reference work.

map collection (noun)	book of facts (noun)
a collection of maps in book form	a book to which you can refer for authoritative facts