untruth vs scheme

untruth and scheme both are nouns.

Word	Noun	Adjective	Verb	Adverb
untruth	Yes	No	No	No
scheme	Yes	No	Yes	No

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

untruth (noun)	scheme (noun)
a false statement	an elaborate and systematic plan of action
	an internal representation of the world; an organization of concepts and actions that can be revised by new information about the world
	a schematic or preliminary plan
	a statement that evades the question by cleverness or trickery
	a group of independent but interrelated elements comprising a unified whole

untruth (verb)	scheme (verb)
	form intrigues (for) in an underhand manner
	devise a system or form a scheme for