colophon vs emblem

colophon and emblem both are nouns.

Word	Noun	Adjective	Verb	Adverb
colophon	Yes	No	No	No
emblem	Yes	No	No	No

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

colophon: a publisher's emblem printed in a book (usually on the title page)
emblem: special design or visual object representing a quality, type, group, etc.

colophon (noun)	emblem (noun)
a publisher's emblem printed in a book (usually on the title page)	special design or visual object representing a quality, type, group, etc.
	a visible symbol representing an abstract idea