scheming vs designing

scheming is not a noun while designing is a noun.

Word	Noun	Adjective	Verb	Adverb
scheming	No	Yes	No	No
designing	Yes	Yes	No	No

As adjectives, scheming and designing are synonyms defined as:

scheming and designing: concealing crafty designs for advancing your own interest

scheming (noun)	designing (noun)
	the act of working out the form of something (as by making a sketch or outline or plan)

scheming (adjective)	designing (adjective)
concealing crafty designs for advancing your own interest	concealing crafty designs for advancing your own interest
acting with a specific goal