Religion is from the Greek word pronounced (not spelled) thrace-kīi'-ah. It is defined as,
religious worship
esp. external, that which consists of ceremonies
religious discipline
James 1:26-27 (KJV)
If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion [is] vain.
27 Pure religion and undefiled before God and the Father is this, To visit the fatherless and widows in their affliction, [and] to keep himself unspotted from the world.