1) The company's new marketing strategy is a whole different kettle of fish.

2) The second book in the series is a completely different kettle of fish from the first one.

3) Dealing with children is a whole different kettle of fish than working with adults.

4) Setting up a small business is a different kettle of fish compared to working for a big corporation.

5) Planning a wedding is a different kettle of fish than organizing a birthday party.

6) Solving complex math problems is a different kettle of fish than completing simple arithmetic tasks.

7) Teaching high school students is a different kettle of fish than instructing elementary school children.

8) Balancing a budget for personal finances is a different kettle of fish than managing a large company's finances.

9) Cooking a simple meal at home is a different kettle of fish compared to preparing a gourmet dinner for a special occasion.

10) Launching a new product is a different kettle of fish than maintaining an existing product line.