Strength is the quality of a person of being physically strong, also the strength can be that a thing is able to bear a forceful pressure.
A skill is the ability of doing something, a person knows how to write this is a skill but a person who can write well is a well skilled writer but the other also have this skill.
A Trait is a quality or a characteristic that a person have this trait is genetic. A person of all traits is the person born with many qualities, also the traits can be learned more and enhanced.
The equation of strength is
Compressive strength = Force / Initial cross sectional surface area.
Skills and traits of a person can be developed and enhanced as per the liking of the person, a person can have better quality of skill in the field of interest.
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