Why are words called words?

The Word "Word" actually comes from several sources. Here's what some of the online dictionaries have to say:

• wurdan (Old Saxon)
• woord, (Dutch)
• wort (German)
• orð (Old Norse)
• waurd (Gothic)
• verbum (pronounced "werbum") (Latin)

someone just thought of it and it got passed around also sometimes a Word is someones first or last name so that could always explain things