bounds vs boundary

bounds and boundary both are nouns.

Word	Noun	Adjective	Verb	Adverb
bounds	Yes	No	No	No
boundary	Yes	No	No	No

As nouns, bounds and boundary are synonyms defined as:

bounds and boundary: the line or plane indicating the limit or extent of something

Other synonyms of bounds include bound.

bounds (noun)	boundary (noun)
the line or plane indicating the limit or extent of something	the greatest possible degree of something
	the line or plane indicating the limit or extent of something
	a line determining the limits of an area