Noun
bond [pl. bonds] , {econ.}
deed [pl. deeds] , {econ.}
policy [pl. policies] , {econ.}
source [pl. sources] , {econ.}
stay [pl. stays] , {instruments & machines}, {econ.}
...
support {instruments & machines}, {econ.}
Verb
to support [ supported ; supported ] , {econ.}
to back [ backed ; backed ] , {econ.}
to underpin [ underpinned ; underpinned ] , {econ.}
to prop {up}, [ propped ; propped ] , {econ.}