How to sign: the property of being physically or mentally strong
"fatigue sapped his strength";
Categories: property
Within this category: brawn, endurance, firmness, good part, huskiness, indomitability, invulnerability, might, robustness, stoutness, sturdiness, vigor
How to sign: the amount of energy transmitted (as by acoustic or electromagnetic radiation)
"he adjusted the intensity of the sound"; "they measured the station's signal strength";
Similiar / Same: intensity, intensity level
Categories: magnitude
Within this category: acoustic power, candlepower, field strength, half-intensity, radio brightness, threshold level
How to sign: permanence by virtue of the power to resist stress or force
"they advertised the durability of their products";
Similiar / Same: lastingness, durability, enduringness
Categories: permanence, permanency
Within this category: changelessness, continuity, everlastingness, indestructibility, tensile strength