Requirement:  "a verifiable statement regarding some property that a software system is to possess" [1].

Requirements are a collection of verifiable statements

Wish:  a requirement that cannot be verified.  We try to satisfy wishes but are not obligated to do so.

Requirement Statements (Capsule):  natural language task description.  *May include design elements.

Template:  Structured requirement statements (capsules) in an instantiation of the general requirements engineering process.