Thank is a type of Convey. Favor would make you want to Thank. Favorable is derived from Favor. Favorable is a synonym of Helpful. 
Box is related to Home. Home is related to Dog. Dog have Nose. Nose is related to Organ. 
Convey <--IsA-- Thank <--CausesDesire-- Favor <--DerivedFrom-- Favorable <--Synonym--> Helpful 
Box <--RelatedTo--> Home <--RelatedTo--> Dog --HasA--> Nose <--RelatedTo--> Organ 