maple-leaf vs emblem

maple-leaf and emblem both are nouns.

Word	Noun	Adjective	Verb	Adverb
maple-leaf	Yes	No	No	No
emblem	Yes	No	No	No

As nouns, emblem is a hypernym of maple-leaf; that is, emblem is a word with a broader meaning than maple-leaf:

Other hypernyms of maple-leaf include allegory.

maple-leaf (noun)	emblem (noun)
the emblem of Canada	special design or visual object representing a quality, type, group, etc.
	a visible symbol representing an abstract idea