Pen is to writing as paintbrush is to ...
painting
Engine is to car as heart is to ...
human
Pencil is to eraser as knife is to ...
cutting board
Sun is to solar system as nucleus is to ...
atom
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
