Danger is related to Potential. Potential is related to Future. Future is the opposite of Current. Current is related to Contemporary. 
Test is related to Tool. Tool is related to Machine. 
Danger <--RelatedTo--> Potential <--RelatedTo--> Future <--Antonym--> Current <--RelatedTo--> Contemporary 
Test <--RelatedTo--> Tool <--RelatedTo--> Machine 