Accomplish is related to Possible. Possible is related to Could. Could is etymologically related to Will. 
Flow is related to Action. Action is related to Turn. Turn is a different concept from Straight. Straight is a synonym of True. 
Accomplish <--RelatedTo--> Possible <--RelatedTo--> Could --EtymologicallyRelatedTo--> Will 
Flow <--RelatedTo--> Action <--RelatedTo--> Turn <--DistinctFrom--> Straight <--Synonym--> True 