deposit (money given as an initial payment)

pay (money)

at first, firstly

first, the beginning, the start

apartment

apartment building, apartment house

an assurance, a guarantee / a guarantee or warranty for a product / legal assumption of responsibility

to ensure, to attest, to stipulate, to vouch / to assume legal responsibility, to swear

to borrow / to rent / to owe

borrowing, a debt, a loan (for the borrower, not the lender) / (obsolete) in the Edo period, a system for arranging house calls by prostitutes