okay vs endorsement

okay and endorsement both are nouns.

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

As nouns, endorsement is a hypernym of okay; that is, endorsement is a word with a broader meaning than okay:

Other hypernyms of okay include countenance, imprimatur, indorsement, sanction, warrant.

okay (noun)	endorsement (noun)
an endorsement	the act of endorsing
	formal and explicit approval
	a promotional statement (as found on the dust jackets of books)
	a speech seconding a motion
	a signature that validates something

okay (adjective)	endorsement (adjective)
being satisfactory or in satisfactory condition

okay (verb)	endorsement (verb)
give sanction to

okay (adverb)	endorsement (adverb)
in a satisfactory or adequate manner