India ink is a type of ink that is known for its rich black color and ability to adhere to a variety of surfaces, making it popular in calligraphy, drawing, and tattooing. While "India ink" is the most commonly used term, there are several other synonyms that can be used interchangeably depending on the context. These include "Chinese ink," "sumi ink," and "Indian black ink." Each of these terms refers to a specific type of ink that is similar in characteristics and uses to India ink. Regardless of the terminology used, India ink is a staple for artists across many mediums.