will vs leave behind

will is a noun but leave behind is not a noun.

Word	Noun	Adjective	Verb	Adverb
will	Yes	No	Yes	No
leave behind	No	No	Yes	No

will (noun)	leave behind (noun)
the capability of conscious choice and decision and intention
a fixed and persistent intent or purpose
a legal document declaring a person's wishes regarding the disposal of their property when they die

will (verb)	leave behind (verb)
determine by choice	be survived by after one's death
decree or ordain	leave unchanged or undisturbed or refrain from taking
leave or give by will after one's death	depart and not take along