Envelope is a type of Container. Container is related to Account. Account is a synonym of Excuse. 
Approve is a different concept from Decline. Decline is a synonym of Diminish. Diminish is the opposite of Grow. Grow is related to Age. 
Envelope --IsA--> Container <--RelatedTo--> Account <--Synonym--> Excuse 
Approve <--DistinctFrom--> Decline <--Synonym--> Diminish <--Antonym--> Grow <--RelatedTo--> Age 