reuse

käyttää uudelleen The act of salvaging or in some manner returning a discarded item into something usable.
puhekieltä code re-use indicates splitting program code into modules or classes so it can be re-used by other programs. data re-use refers to legal rights to re-use for publication, data that one has downloaded or licensed from a third party.
To use something that is considered past its usefulness, again (usually for something else).

The students reused empty plastic bottles in their science experiment.