Factor is the opposite of Expand. Expand is the opposite of Shrink. Shrink is the opposite of Grow. Grow can be Anonymous. 
Wall is related to Door. Door is related to Corridor. 
Factor <--Antonym--> Expand <--Antonym--> Shrink <--Antonym--> Grow --HasProperty--> Anonymous 
Wall <--RelatedTo--> Door <--RelatedTo--> Corridor 