There are differences between graphite and coal in the following four aspects:

Composition and structure: Graphite is composed of carbon elements, and its structure is composed of face centered cubic crystal structures. Carbon atoms are connected by strong covalent bonds. Coal, on the other hand, is mainly composed of alkyl groups and aromatic rings, with alkyl groups containing more hydrogen elements.

Physical properties: Graphite has excellent conductivity, which is comparable to metals such as copper and silver. Coal, on the other hand, is a type of sedimentary rock containing carbon, which has the characteristics of providing thermal and chemical energy.

Usage: Graphite is widely used in the manufacturing of pencil leads, electrodes, refrigerants, ships, anti-corrosion coatings, and lithium batteries due to its conductivity and other excellent properties. Coal, on the other hand, is mostly used as a biofuel and is widely used in fields such as power generation, barbecue, and water heaters.

Formation mode: Graphite is an allotrope of carbon, which serves as a neutron moderator in atomic reactors. Coal, on the other hand, is a solid substance formed by ancient plants through long-term geological processes in an airless environment.

Overall, graphite and coal differ in composition, structure, physical properties, usage, and formation methods.