o.k. vs hunky-dory

o.k. and hunky-dory both are adjectives.

Word	Noun	Adjective	Verb	Adverb
o.k.	No	Yes	No	No
hunky-dory	No	Yes	No	No

As adjectives, o.k. and hunky-dory are synonyms defined as:

Other synonyms of o.k. include all right, cool, fine, ok, okay.

o.k. (adjective)	hunky-dory (adjective)
being satisfactory or in satisfactory condition	being satisfactory or in satisfactory condition