* Verb: This is the most common use, meaning to create something counterfeit or fake. Example: "He forged a signature on the document."
* Adjective: Meaning made or shaped by heating and hammering metal. Example: "The forged iron gate stood strong against the elements."
* Past participle: This form can act as an adjective, describing something that has been forged. Example: "The forged documents were easily detected."
So, the part of speech of "forged" depends on the context.