Execution is a synonym of Implementation. Practice is a type of Implementation. Heritage is a type of Practice. Heritage is a synonym of Legacy. 
Find is related to Loose. Loose is a synonym of Free. Free is a synonym of Liberal. 
Execution <--Synonym--> Implementation <--IsA-- Practice <--IsA-- Heritage <--Synonym--> Legacy 
Find <--RelatedTo--> Loose <--Synonym--> Free <--Synonym--> Liberal 