💎🪵⛰️

#hardness #solidity #hard material #unyielding #firmness #tough material

🪵⚖️

#timber #hard material #plant structure #durable #woody tissue #stem

🧱🏗️👷

#concrete #cement #hard material

💎⚙️

#cog #industrial diamond #hard material

📏🪵

#rigidity #inflexibility #hard material #unbending #structural stiffness #solid object #inanimate stiffness

💎🪱🧱

#hardness #hard material #rock hard #diamond hard

💎🔩🪵

#solid material #substance #hard material