sanction vs okay

sanction and okay both are nouns.

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

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

Other hyponyms of sanction include O.K., OK, okeh, okey, visa, nihil obstat.

As verbs, sanction and okay are synonyms defined as:

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

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

Other hypernyms of sanction include approve, O.K., sanction.

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

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

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

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