adjective
hard
HARD/hɑːrd/
Firm enough to resist pressure or bending.
The man presses on a hard stone block beside a soft sponge.

Etymology
Old English heard already described something solid and firm rather than soft. The selected meaning preserves that physical sense, emphasizing resistance to bending, breaking, or cutting.
In context
hard rubber maintains its shape and Edge longer in high temperatures ensuring a streak free finish
More examples
- The ground is too hard to dig with a small shovel.
- This bread has a hard crust and a soft center.
- The clay becomes harder as it dries.
Forms
hard · harder · hardest
hardness noun — The quality of resisting pressure or bending.
harden verb — To become hard or make something hard.