forge

To create, develop, or make steady progress, often with effort.

"They forged a strong alliance."

To illegally copy or falsify a document, signature, or banknote.

"He tried to forge the signature."

A workshop with a furnace where metal is heated and shaped.

"The iron was heated in the forge."

To shape metal by heating it in a furnace and then hammering it.

"The blacksmith will forge the iron."