Definitions of equal:

• noun:   a person who is of equal standing with another in a group
• verb:   be identical or equivalent to

  Example: "One dollar equals 1,000 rubles these days!"

• verb:   be equal to in quality or ability
• verb:   make equal, uniform, corresponding, or matching

  Example: "Let's equalize the duties among all employees in this office"

• adjective:   well matched; having the same quantity, value, or measure as another

  Example: "On equal terms"

• adjective:   equal in amount or value

  Example: "An equal number"