As verbs the difference between lase and lease
is that lase
is while lease
is (chiefly dialectal) to gather or lease
can be to tell lies; tell lies about; slander; calumniate or lease
can be to release; let go; unloose or lease
can be to operate or live in some property or land through purchasing a long-term contract (or leasehold) from the owner (or freeholder).
As an adjective lease is
false; lying; deceptive.
As a noun lease is
falsehood; a lie or lease
can be an open pasture or common or lease
can be a contract granting use or occupation of property during a specified period in exchange for a specified rent or lease
can be the place at which the warp-threads cross on a loom.