white sauce vs bechamel sauce

white sauce and bechamel sauce both are nouns.

Word	Noun	Adjective	Verb	Adverb
white sauce	Yes	No	No	No
bechamel sauce	Yes	No	No	No

As nouns, white sauce and bechamel sauce are synonyms defined as:

white sauce and bechamel sauce: milk thickened with a butter and flour roux

Other synonyms of white sauce include bechamel.

white sauce (noun)	bechamel sauce (noun)
milk thickened with a butter and flour roux	milk thickened with a butter and flour roux