Head is related to Circle. Circle is a synonym of Lap. Lap is the opposite of Stand. Stand is the opposite of Lay. 
Genetic is derived from Gene. Gene is a synonym of Factor. Factor is related to Math. Math is related to Area. 
Head <--RelatedTo--> Circle <--Synonym--> Lap <--Antonym--> Stand <--Antonym--> Lay 
Genetic --DerivedFrom--> Gene <--Synonym--> Factor <--RelatedTo--> Math <--RelatedTo--> Area 