Ironwood is a common name for a large number of woods that have a reputation for hardness. Usage of the name may (or may not) include the tree that yields this wood. Some of the species involved are:
Acacia estrophiolata, Southern ironwoodAcacia stenophylla, IronwoodAndrostachys johnsonii, Lebombo ironwoodCarpinus caroliniana, American hornbeamCaesalpinia ferrea, Brazilian ironwoodCasuarina equisetifolia, Beach ironwood, native to AustraliaCasuarinaceae, she-oaks in generalChionanthus foveolatus, Pock ironwood, native to South AfricaChoricarpia subargentea, Giant ironwoodCopaifera spp., Diesel tree, Kerosene tree, Kupa'y, Cabismo, or CopaúvaCynometra alexandri, Uganda ironwoodDiospyros blancoi, Mabolo, Velvet apple or Kamagong, native to the PhilippinesErythrophleum chlorostachys, Cooktown ironwood, native to AustraliaEusideroxylon zwageri, Borneo ironwoodGuaiacum officinale, Lignum vitaeGuaiacum sanctum, HolywoodHolodiscus discolor, Ocean spray or CreambrushHopea odorata, White thingan, Ceylon or Malabar ironwoodKrugiodendron ferreum, Black ironwoodLophira alata, Red ironwoodLyonothamnus floribundus, Catalina ironwoodMesua ferrea, Rose chestnut or Ceylon ironwood or NaharNestegis apetala, Coastal maire, Broad-leaved maire or ironwoodOlea spp., various olive treesOlneya tesota, Desert ironwoodOstrya knowltonii, Knowlton's hophornbeamOstrya virginiana, HophornbeamParrotia persica, Persian ironwoodPemphis acidula, Maldivian ironwoodSideroxylon lanuginosum, Ironwood or Gum bullyTabebuia serratifolia, Ipê, Brazilian walnut, Lapacho, Yellow pouiVepris lanceolata, White ironwood, native to South AfricaXanthostemon verdugonianus, Philippine ironwood or Mangkono, endemic to the Philippines