Holland vs The Netherlands

Holland and The Netherlands both are nouns.

Word	Noun	Adjective	Verb	Adverb
Holland	Yes	No	No	No
The Netherlands	Yes	No	No	No

As nouns, Holland and The Netherlands are synonyms defined as:

Holland and The Netherlands: a constitutional monarchy in western Europe on the North Sea; half the country lies below sea level

Other synonyms of Holland include Nederland, Netherlands.

Holland (noun)	The Netherlands (noun)
a constitutional monarchy in western Europe on the North Sea; half the country lies below sea level	a constitutional monarchy in western Europe on the North Sea; half the country lies below sea level