Mortgage
Mortgage means a member of such classes of liens, including subordinate liens, as are commonly given or are legally effective to secure advances on, or the unpaid purchase price of, real estate under the laws of the State in which the real estate is located, or a manufactured home that is personal property under the laws of the State in which the manufactured home is located, together with the credit instruments, if any, secured thereby, and includes interests in mortgages. Mortgage includes a mortgage, lien, including a subordinate lien, or other security interest on the stock or membership certificate issued to a tenant-stockholder or resident-member by a cooperative housing corporation, as defined in section 216 of the Internal Revenue Code of 1986, and on the proprietary lease, occupancy agreement, or right of tenancy in the dwelling unit of the tenant-stockholder or resident-member in such cooperative housing corporation.