imprimatur vs sanction

imprimatur and sanction both are nouns.

Word	Noun	Adjective	Verb	Adverb
imprimatur	Yes	No	No	No
sanction	Yes	No	Yes	No

As nouns, imprimatur and sanction are synonyms defined as:

Other synonyms of imprimatur include countenance, endorsement, indorsement, warrant.

imprimatur (noun)	sanction (noun)
formal and explicit approval	the act of final authorization
	a mechanism of social control for enforcing a society's standards
	official permission or approval
	formal and explicit approval

imprimatur (verb)	sanction (verb)
	give sanction to
	give religious sanction to, such as through an oath
	give authority or permission to