bricolage (en)

(noun) construction (as of a sculpture or a structure of ideas) achieved by using whatever comes to hand / (noun) something constructed in this way

fiat (en)

(noun) an authoritative command or order to do something; an effectual decree

interstice (en)

(noun) an intervening space

synecdoche (en)

a figure of speech by which a part is put for the whole (as fifty sail for fifty ships), the whole for a part (as society for high society), the species for the genus (as cutthroat for assassin), the genus for the species (as a creature for a man), or the name of the material for the thing made (as boards for stage)