* For physical strength: force
* For possibility: pourrait (this is the conditional form of the verb "pouvoir" - to be able to)
* For power: puissance
For example:
* "He has the force to lift that weight." (Il a la force de soulever ce poids.)
* "You might be right." (Tu pourrais avoir raison.)
* "The king has great puissance." (Le roi a une grande puissance.)