Can you let us know what these have in common.
1) Car & Tree
2) School & Eye
3) Computer & Brain
4) Desk & Human
5) Bed & Book
6) Plane & Birds
7) River & Money
8) Piano & Laptop
9) Tree & Hand
10) Bath tub & Socket
11) Arm & Clock
12) Printer & Octopus
13) House plant & Herbal drug
14) Fish & Musical theory
15) Apple & Earth
16) Light & Flower
17) Glasses & Displayed artwork
18) Headphones & Car tool
19) Football boots & Earings
20) Drum kit & Hunting trap