Here are the answers to Koko's word match challenge:

1. f
2. d
3. a (perhaps because a tiger has yellow and black stripes, whereas a zebra has white and black stripes)
4. e
5. h (perhaps because they both have long noses)
6. b (perhaps because it is like a match that comes in the shape of a bottle)
7. c (perhaps because it is something bad you say when you are mad)
8. g