Scheme
Part of speech: verb
Definition: To plot, or contrive a plan.
Part of speech: noun
Definition: A systematic plan of future action. A plot or secret, devious plan. An orderly combination of related parts. A chart or diagram of a system or object. A type of topological space. A systematic plan of future action.
Example sentence: By keeping the annuities, we could build up a national industry every years as big as the Shannon Scheme.
Schema
Part of speech: noun
Definition: An outline or image universally applicable to a general conception, under which it is likely to be presented to the mind.A formal description of the structure of a database: the names of the tables, the names of the columns of each table, and the type and other attributes of each column. (And similarly for the descriptive information of other database-like structures, such as XML files.)A formula in the language of an axiomatic system, in which one or more schematic variables appear, which stand for any term or subformula of the system, which may or may not be required to satisfy certain conditions.