Hard work - It means that you work in a gruelling manner; for instance, spending 10+ hours studying for an exam.
Smart work - Smart work can go hand in hand with hard work. But 'smart work' means that you use an efficient method to finish a particular task. For instance, referring the above example, you use a specific method to study for an exam that saves your time, as well as prepares you for it perfectly.
HR interview · Student answers
What is the difference between hard work and smart work? 6 real answers
Answers shared by students and professionals. Read a few to see different approaches, like the ones that helped you, then write your own version below.
Hard work leads to Smart work.
If you work hard in the beginning you can learn new things, which can help you to work smartly. In hard work your Body leads, but, in smart work, your brain leads.
Both hard work and smart work give solution for a particular problem but smart work gives a solution in a minimum time with more brain usage than hard work.
Ultimately, smart work is the best option to save time as well as to improve mental ability/skill/knowledge.