That can be called.
(quote-book)
{{quote-text|en|year=2010|author=Trey Nash|title=Accelerated C 2010|page=xxvi
That may be redeemed by its holder before it matures.
An object of a type that can be called, such as a function.
{{quote-text|en|year=2013|author=David Beazley; Brian K. Jones|title=Python Cookbook: Recipes for Mastering Python 3
A bond.