Proportion is a synonym of Dimension. Dimension is a type of Magnitude. Magnitude is related to Measure. 
Concern is a type of Anxiety. Concern is related to Crop. Crop is related to Green. Green is related to Leave. 
Proportion <--Synonym--> Dimension --IsA--> Magnitude <--RelatedTo--> Measure 
Anxiety <--IsA-- Concern <--RelatedTo--> Crop <--RelatedTo--> Green <--RelatedTo--> Leave 