skulduggery vs hanky panky

skulduggery and hanky panky both are nouns.

Word	Noun	Adjective	Verb	Adverb
skulduggery	Yes	No	No	No
hanky panky	Yes	No	No	No

As nouns, skulduggery and hanky panky are synonyms defined as:

skulduggery and hanky panky: verbal misrepresentation intended to take advantage of you in some way

Other synonyms of skulduggery include hocus-pocus, jiggery-pokery, skullduggery, slickness, trickery.

skulduggery (noun)	hanky panky (noun)
verbal misrepresentation intended to take advantage of you in some way	verbal misrepresentation intended to take advantage of you in some way