"Fatwood" is a term commonly used to describe the rich and resinous heartwood of pine trees. This type of wood is typically harvested from dead pine trees, and it is highly valued for its ability to ignite quickly and burn hot. However, there are several synonyms that can also be used to describe this type of wood, including "lighter wood," "resin wood," and "fat lighter." These terms are often used interchangeably, and they all refer to wood that is high in resin content and therefore easy to ignite. Regardless of the term used, fatwood is a popular choice for starting fires and is often used in fireplaces, woodstoves, and outdoor fire pits.