1. mechanism

Today we are going to learn “mechanism”. It means a system that is intended to achieve something or deal with a problem
(1) Britain will trigger the mechanism to leave the European Union next week.
(2) The Army has set up mechanisms to help jobless ex-soldiers get work.

2. human

Another word is “human”. It means belonging to or relating to people
(1) Historically, the war between nature and humans has never stopped.
(2) The desire for joy lies deep within the human spirit.