See is related to Wave. Wave is the opposite of Particle. Particle is related to Grain. Grain is a type of Texture. 
Route is related to Course. Workshop is a type of Course. 
See <--RelatedTo--> Wave <--Antonym--> Particle <--RelatedTo--> Grain --IsA--> Texture 
Route <--RelatedTo--> Course <--IsA-- Workshop 