Worcester sauce vs Worcestershire sauce

Worcester sauce and Worcestershire sauce both are nouns.

Word	Noun	Adjective	Verb	Adverb
Worcester sauce	Yes	No	No	No
Worcestershire sauce	Yes	No	No	No

As nouns, Worcester sauce and Worcestershire sauce are synonyms defined as:

Worcester sauce and Worcestershire sauce: a savory sauce of vinegar and soy sauce and spices

Other synonyms of Worcester sauce include Worcestershire.

Worcester sauce (noun)	Worcestershire sauce (noun)
a savory sauce of vinegar and soy sauce and spices	a savory sauce of vinegar and soy sauce and spices