What is the difference between "industry" &"diligence"/ "loyalty" &"fidelity"? 1) It seems that "industry" &"diligence" both mean working hard. Is it the same thing when I say somebody is industrious versus somebody is diligent? 2)I think "loyalty" &"fidelity" share the same meaning as faithfulness towards something. Loyalty seems used in various situations, while fidelity is used in fewer situations: "loyalty to a government"(like allegiance); loyalty/fidelity to your spouse(like faithfulness); loyalty/fidelity to your ideals. In my view, the greatest difference between them is whether it can refer to the allegiance towards a government or other superior party. However, I also see other examples where fidelity can also be used under this context, like "This fidelity kept Mr. brown in government." So I am quite confused. Can't really distinguish faithfulness/loyalty/fidelity. Thank you!