署名 and 証明書: Signing and verifying with a document
Compare signing a contract or collecting signatures with applying for an enrollment certificate or requiring address verification. Distinguish an action from a document’s function.
Signing and collecting signatures
署名 means a signature or signing. 「内容を確認してから契約書に署名した。」 describes checking the contents and then signing a contract. The sequence of these actions is stated.
「計画の見直しを求める署名が集まった。」 says signatures calling for reconsideration of a plan were collected. Signing is not limited to contracts, and the collection does not report a completed change to the plan.
A document that verifies something
証明書 means a certificate. 「窓口で在学証明書を申請した。」 describes applying for a certificate of enrollment at a counter. An application and an issued certificate are different states.
「手続きには住所を確認できる証明書が必要だ。」 says the procedure requires a certificate that verifies an address. It identifies the document’s function without reporting a completed submission.
Separate the action and the function
The 署名 calling for reconsideration concerns signatures and their collection. The address-verifying 証明書 concerns a document and what it can verify.
Signing and providing a certificate may occur within the same process. Their coexistence does not turn signature collection, an application, or a stated requirement into a confirmed legal effect or an acquired right.
Do collected 署名 calling for reconsideration and a required address-verifying 証明書 have the same function?
Show the answer and why
No. The first concerns signatures expressing a request, while the second concerns a document used to verify an address. Separate signing or collection from the verifying document.