uhhhh strange question .
1. Avocados and kiwis are different as they are not the same fruit.
2. Avocados have less sugar
3. Kiwis have more vitamin C
4. There different colors
5. Kiwis have alot of little black seeds in them
6. Kiwis have a brown fuzzy peel
7. Avocados have dark green or black peel
8. Avocados have one large seed
9. The taste.
10. The shape.
11. How they are eaten.
Hope this helped lol and if this is a debate i hope you won.