Marker is a synonym of Mark. Mark is related to Result. Result is the opposite of Cause. Cause is related to Oil. 
you are likely to find Snow in/at/on Ground. Ground is related to Stake. 
Marker <--Synonym--> Mark <--RelatedTo--> Result <--Antonym--> Cause <--RelatedTo--> Oil 
Snow --AtLocation--> Ground <--RelatedTo--> Stake 