Electronics is a type of Physics. Electronics is related to Charge. Charge is a different concept from Free. Information wants (to) Free. 
Hall is related to Palace. Palace is related to Shelter. 
Physics <--IsA-- Electronics <--RelatedTo--> Charge <--DistinctFrom--> Free <--Desires-- Information 
Hall <--RelatedTo--> Palace <--RelatedTo--> Shelter 