scheme vs waiting game

scheme and waiting game both are nouns.

Word	Noun	Adjective	Verb	Adverb
scheme	Yes	No	Yes	No
waiting game	Yes	No	No	No

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

scheme (noun)	waiting game (noun)
an elaborate and systematic plan of action	a strategy of delay
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

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