Seed is related to Baby. People can Baby. People is the opposite of Youth. Youth is a synonym of Youngster. 
Main is related to Part. Part is related to Class. Class is related to Scholar. Scholarship is derived from Scholar. 
Seed <--RelatedTo--> Baby <--CapableOf-- People <--Antonym--> Youth <--Synonym--> Youngster 
Main <--RelatedTo--> Part <--RelatedTo--> Class <--RelatedTo--> Scholar <--DerivedFrom-- Scholarship 