okay vs sanction

okay and sanction both are nouns.

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

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

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

As verbs, okay and sanction are synonyms defined as:

Other synonyms of okay include approve, O.K..

As verbs, sanction is a hyponym of okay; that is, sanction is a word with a more specific, narrower meaning than okay:

Other hyponyms of okay include sanctify, visa, back, endorse, indorse, plump for, plunk for, support, confirm, greenlight.

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

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

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

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