no
Javelins believe it or not, are members of the rodent family.
javelins
<http://www.javeland.com/> is a reliable site for high quality javelins of various weights and makes.
Initial javelins were made of wood until the mid-1950's. Dick Held improved javelin aerodynamics and durability by introducing aluminum javelins around that time (his brother, Bud, was the world-record holder for a time). Current javelins are made of steel, aluminum and/or carbon fiber.
No
Yes
wood and iron
The plural for for javelin is javelins.
iron
wood and iron
A roof and a building
because it protects you from swords or javelins better