Term is related to Length. Length is related to Area. Area is related to Measure. Measure is related to Century. 
Appreciate is a type of Understand. Sense is a type of Understand. 
Term <--RelatedTo--> Length <--RelatedTo--> Area <--RelatedTo--> Measure <--RelatedTo--> Century 
Appreciate --IsA--> Understand <--IsA-- Sense 