Gritrock is a term commonly used to describe a type of hard rock that is composed of various minerals and small pieces of sediment. However, there are several other synonyms for gritrock that are worth knowing, especially for geology enthusiasts. Some of the most common options include igneous rock, metamorphic rock, sedimentary rock, and quartzite. Each of these synonyms refers to a specific type of rock formation and has its unique properties and characteristics. Therefore, it's important to become familiar with these terms if you want to understand the different types of rocks found in nature.