Bloody is related to Cut. Cut is the opposite of Increase. Increase is a different concept from Decrease. Decrease is the opposite of Gain. 
Close is a type of Fill. Lock can be used for Close. Lock can Open. 
Bloody <--RelatedTo--> Cut <--Antonym--> Increase <--DistinctFrom--> Decrease <--Antonym--> Gain 
Fill <--IsA-- Close <--UsedFor-- Lock --CapableOf--> Open 