Tropical is related to Palm. Palm is a type of Area. 
Party is related to Democratic. Democratic is related to Nation. Nation is a different concept from Specific. Specific is similar to Proper. 
Tropical <--RelatedTo--> Palm --IsA--> Area 
Party <--RelatedTo--> Democratic <--RelatedTo--> Nation <--DistinctFrom--> Specific <--SimilarTo--> Proper 