As proper nouns the difference between hertfordshire and welwyn
is that hertfordshire is an inland county of south-east England bordered by Cambridgeshire, Essex, Greater London, Buckinghamshire and Bedfordshire while Welwyn is a village in Hertfordshire, England.
hertfordshire
Proper noun
(
en proper noun)
An inland county of south-east England bordered by Cambridgeshire, Essex, Greater London, Buckinghamshire and Bedfordshire.
welwyn
English
Derived terms
* Welwyn Garden City