As used in this chapter:
(1) The term "lien debtor" means the person who is obligated, owes payment or other performance. Where the lien debtor and the owner of the collateral are not the same person, the term "lien debtor" means the owner of the collateral.
(2) "Collateral" means the property subject to a statutory lien.
(3) "Lienholder" means a person who, by statute, has acquired a lien on the property of the lien debtor, or such person's successor in interest.
(4) "Secured party" has the same meaning as used in Article 9A of the Uniform Commercial Code (Title 62A RCW).