Word decomposition
Hard explanation is firm, as opposed to "soft": hard. Hardwood. Hard coal. Hard sleeper. Hard seat. Coins. Hard pen (pen, pencil, ballpoint pen). Hardening. Hardware (a part of a computer system, which is the general name of all parts, components and equipment of a computer). Play hardball (figuratively, tough versus tough, explanation card of the card × brand made of wood or other materials: house number. Street signs. Brand. A plaque. Quote. Certificate: gold medal. Silver medal. Waist tag. Product trademark: brand-name goods. What ancient soldiers used to protect their bodies during the war or when modern police dispersed demonstrators: shields. Shield. Entertainment or *