Signify vs Signifier - What's the difference?

As a verb signify

is to give (something) a meaning or an importance.

(linguistics) the sound of spoken word or string of letters on a page that a person recognizes as a sign.

(en-verb)

To give (something) a meaning or an importance.

To show one’s intentions with a sign etc.

* (rfdate) (William Shakespeare)

I'll to the king; and signify to him / That thus I have resign'd my charge to you.

* (rfdate) (Jonathan Swift)

The government should signify to the Protestants of Ireland that want of silver is not to be remedied.

To mean; to betoken.

* (rfdate) (William Shakespeare)

A tale / Told by an idiot, full of sound and fury, / Signifying nothing.

* (l) * (l)

(Intension)

(en noun)

(linguistics) The sound of spoken word or string of letters on a page that a person recognizes as a sign.