* δύναμις (dýnamis): This word often refers to power, strength, capacity, or potential. It's a good choice if you're talking about the inherent power or capacity to do something.
* ἰσχύς (ischýs): Similar to δύναμις, this emphasizes strength and potency, often physical but can be applied metaphorically.
* ἐπιδεξιότης (epidexiótēs): This word refers to skill, dexterity, or proficiency. It's suitable when the ability is a learned skill.
* χάρις (cháris): While primarily meaning "grace" or "favor," it can also imply natural talent or aptitude.
The best translation will depend heavily on the context. For example, "the ability to swim" might be best translated using δύναμις ("the power to swim") or ἐπιδεξιότης ("the skill of swimming"), depending on whether you want to emphasize innate capacity or learned skill.