zero-coupon security vs zero coupon security

zero-coupon security and zero coupon security both are nouns.

Word	Noun	Adjective	Verb	Adverb
zero-coupon security	Yes	No	No	No
zero coupon security	Yes	No	No	No

As nouns, zero-coupon security and zero coupon security are synonyms defined as:

zero-coupon security and zero coupon security: a security that makes no interest payments but instead is sold at a deep discount from its face value

zero-coupon security (noun)	zero coupon security (noun)
a security that makes no interest payments but instead is sold at a deep discount from its face value	a security that makes no interest payments but instead is sold at a deep discount from its face value