* Autograph: "Auto" means "self," so an autograph is a signature written by oneself.
* Biography: "Bio" means "life," so a biography is a written account of someone's life.
* Cartograph: "Carto" means "map," so a cartographer is someone who makes maps.
* Cryptography: "Crypto" means "hidden," so cryptography is the practice of hiding information through codes.
* Electrograph: "Electro" means "electricity," so an electrograph is a device that records electrical activity.
* Epigraph: "Epi" means "upon," so an epigraph is a quotation at the beginning of a literary work.
* Graphite: This word directly refers to the material used in pencils.
* Graph: This is the base word meaning a diagram that visually represents data.
As you can see, "graph" is often used to describe a visual representation or a process of recording.