Mud is related to Brick. Brick is related to Construction. Construction is related to Paint. Paint is related to Cream. 
Mask is related to Terror. Bomb can be used for Terror. Bomb is related to Mine. 
Mud <--RelatedTo--> Brick <--RelatedTo--> Construction <--RelatedTo--> Paint <--RelatedTo--> Cream 
Mask <--RelatedTo--> Terror <--UsedFor-- Bomb <--RelatedTo--> Mine 