We don't have synonyms for cordwood yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are corkwood, coralwood and cord wood.
(n) :
wood suitable for use as firewood; firewood cut and split into conveniently sized pieces for easy stacking into cords; split and cut firewood as an economic commodity
"1884 The June rise used to be always luck for me; because as soon as that rise begins here comes cordwood floating down, and pieces of log rafts -- sometimes a dozen logs together"
(n) :
wood suitable for use as firewood; firewood cut and split into conveniently sized pieces for easy stacking into cords; split and cut firewood as an economic commodity
"1884 The June rise used to be always luck for me; because as soon as that rise begins here comes cordwood floating down, and pieces of log rafts -- sometimes a dozen logs together"