endorse vs ratify

endorse and ratify both are verbs.

Word	Noun	Adjective	Verb	Adverb
endorse	No	No	Yes	No
ratify	No	No	Yes	No

endorse (verb)	ratify (verb)
sign as evidence of legal transfer	approve and express assent, responsibility, or obligation
be behind; approve of
guarantee as meeting a certain standard
give support or one's approval to