Pen is to writing as paintbrush is to ...
painting
Key is to lock as password is to ...
computer
Wheel is to bicycle as oar is to ...
rowboat
Glasses are to eyes as headphones are to ...
ears
Tree is to forest as star is to ...
galaxy (or space)
Sail is to sailboat as wing is to ...
airplane
Umbrella is to rain as sunscreen is to ...
sun
Chef is to kitchen as conductor is to ...
orchestra
Petal is to flower as leaf is to ...
tree
Tires are to car as shoes are to ...
feet
Feather is to bird as fur is to ...
mammal
Gasoline is to car as food is to ...
human
Roots are to plants as foundation is to ...
building
Honey is to bee as milk is to ...
cow
Battery is to remote control as charger is to ...
smartphone
Water is to river as sand is to ...
desert (or beach)
