Docs can you explain, is root canal removable/replaceable?

No: Root canal is a space inside the tooth that houses the pulp tissue (blood vessels, nerve tissue, etc). If the nerve tissue becomes infected a dentist will perform root canal treatment to clean out the space and to preserve the tooth. If you extract a tooth, the root canal infection is gone and so is the tooth.

Yes: I'm not sure what you mean by your question. A root canal is removable if the entire tooth is extracted and replaceable with either an implant or a bridge.