close, end, conclude, finish, complete, terminate mean to bring or come to a stopping point or limit. close usually implies that something has been in some way open as well as unfinished.
Definition of close 1 verb from the Oxford Advanced Learner's Dictionary. [transitive, intransitive] close (something) to put something into a position so that it covers an opening; to get into this position synonym shut. He closed the door firmly. Would anyone mind if I closed the window? She closed the gate behind her.
As an adjective, "close" describes something located or occurring nearby, either in terms of physical space or temporal proximity. "Close" also refers to strong emotional bonds or intimate relationships between people.