scheme vs plan

scheme and plan both are nouns.

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

As nouns, plan is a hypernym of scheme; that is, plan is a word with a broader meaning than scheme:

Other hypernyms of scheme include program, programme.

As verbs, plan is a hypernym of scheme; that is, plan is a word with a broader meaning than scheme:

scheme (noun)	plan (noun)
an elaborate and systematic plan of action	scale drawing of a structure
an internal representation of the world; an organization of concepts and actions that can be revised by new information about the world	a series of steps to be carried out or goals to be accomplished
a schematic or preliminary plan	an arrangement scheme
a statement that evades the question by cleverness or trickery
a group of independent but interrelated elements comprising a unified whole

scheme (verb)	plan (verb)
form intrigues (for) in an underhand manner	make plans for something
devise a system or form a scheme for	have the will and intention to carry out some action
	make or work out a plan for; devise