Huge is a synonym of Vast. Vast is the opposite of Minute. Minute is related to Segment. 
Invasion is a type of Spread. Spread is a synonym of Expand. Expand is related to Learn. Learn is related to Do. 
Huge <--Synonym--> Vast <--Antonym--> Minute <--RelatedTo--> Segment 
Invasion --IsA--> Spread <--Synonym--> Expand <--RelatedTo--> Learn <--RelatedTo--> Do 