Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
toughness | Yes | No | No | No |
difficulty | Yes | No | No | No |
toughness (noun) | difficulty (noun) |
---|---|
the property of being big and strong | an effort that is inconvenient |
enduring strength and energy | the quality of being almost beyond one's ability to deal with and requiring a great effort to achieve a positive result |
impressive difficulty | |
the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking |