We don't have synonyms for furzes yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are furze, Furies and furzen.
(n) :
A thorny evergreen shrub, with yellow flowers, Ulex gen. et spp., of which Ulex europaeus is particularly common upon the plains and hills of Great Britain and Ireland.
(n) :
A thorny evergreen shrub, with yellow flowers, Ulex gen. et spp., of which Ulex europaeus is particularly common upon the plains and hills of Great Britain and Ireland.