Janka Hardness Scale
When in doubt you can always look up the hardness of a wood floor in the hardness chart below. The janka chart below is available to see the difference.

Brazilian Ebony 3692 psi
Brazilian Walnut/ Ipe  3680 psi
African Pearwood/Moabi 3680 psi
Bolivian Cherry 3650 psi
Lapacho 3640 psi
Brazilian Teak 3540 psi
Tiete Chestnut 3540 psi
Tiete Rosewood 3280 psi
Brazilian Redwood 3190 psi
Brazilian Rosewood 3000 psi
Bloodwood 2900 psi
Brazilian Cherry 2820 psi
Patagonian Rosewood 2920 psi
Caribbean Rosewood 2920 psi
Santos Mahogany 2200 psi
Tigerwood 2160 psi
Purple Heart 2090 psi
Jarrah 2080 psi
Sydney Blue/ Gum 2025 psi
African Rosewood/ Bubigna 1980 psi
Merbau 1925 psi
Amendoim 1912 psi
Hickory/ Pecan 1820 psi
Doussie 1770 psi
Padouk/ African Cherry 1725 psi
Kempas 1710 psi
Bamboo 1650 psi
Wongo 1630
Zebrawood 1575 psi
Timborana 1570 psi
Cameron 1543 psi
African Walnut/ Sappele 1500 psi
Brazilian Maple 1500 psi
American Maple 1450 psi
Royal Mahogany 1400 psi
Caribbean Walnut 1400 psi
Australian Cypress 1375 psi
White Oak 1360 psi
Red Oak 1290 psi
Caribbean Heart Pine 1240 psi
Larch 1200 psi
Teak 1155 psi
Tigerwood 1155 psi
Brazilian Euclyptus 1125 psi
Peruvian Walnut 1080 psi
American Cherry 950 psi
Southern Yellow Pine 870 psi
South American Lacewood 840 psi
African Mahogany 830 psi
Mahogany 800 psi
Honduran Mahoany 800