What is the difference between ink pen and water
The ink includes pen water, and the pen water is one of the inks.
The same thing, different name only.
Ink is a colloid containing a dye or dye, and the ink is used for writing or painting. The earliest inks are made of metal, walnut shells or seeds made of dyes or using fish, octopus and other marine animals. China's ink is carbon ink. People think of ink is the first to think of the pen or brush ink, but with the printing and dyeing and inkjet output technology is widely used, in fact, the most used inkjet printing and printing ink.
