What part of speech is the word signature?

"Signature" can be several parts of speech, depending on how it's used in a sentence:

* Noun: This is the most common usage, referring to a person's unique handwritten name or a distinctive feature or characteristic.

* Example: "The artist's signature was scrawled in the corner of the painting."

* Adjective: Describing something as unique or distinctive.

* Example: "He had a signature move that always wowed the crowd."

* Verb: To sign one's name.

* Example: "Please signature the document in the designated space."

So, the part of speech for "signature" depends on its context in the sentence.