Need
Part of speech: noun
Definition: Something required.
Part of speech: verb
Definition: To have an absolute requirement for. To want strongly; to feel that one must have something. To be obliged or required to.
Example sentence: If you have a garden and a library, you have everything you need.
Postulate
Part of speech: noun
Definition: Something assumed without proof as being self-evident or generally accepted, especially when used as a basis for an argument.A fundamental element; a basic principle.An axiom.A requirement; a prerequisite.
Part of speech: verb
Definition: To assume as a truthful or accurate premise or axiom, especially as a basis of an argument.To appoint or request one's appointment to an ecclesiastical office.To request, demand or claim for oneself.