endorsement vs countenance

endorsement and countenance both are nouns.

Word	Noun	Adjective	Verb	Adverb
endorsement	Yes	No	No	No
countenance	Yes	No	Yes	No

As nouns, endorsement and countenance are synonyms defined as:

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

endorsement (noun)	countenance (noun)
the act of endorsing	the appearance conveyed by a person's face
formal and explicit approval	the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)
a promotional statement (as found on the dust jackets of books)	formal and explicit approval
a speech seconding a motion
a signature that validates something

endorsement (verb)	countenance (verb)
	consent to, give permission; permit