Observe is related to See. See is a synonym of Assure. Assure is a different concept from Trouble. Trouble is a synonym of Disturb. 
Type is related to Twist. 
Observe <--RelatedTo--> See <--Synonym--> Assure <--DistinctFrom--> Trouble <--Synonym--> Disturb 
Type <--RelatedTo--> Twist 