Karbon is a vector-based drawing application for KOffice.
What makes a vector-based drawing application like Karbon different from a pixel-based drawing application like Krita?
In a vector drawing - such as the drawing shown above - your drawing is stored as geometric shapes such as lines and curves. When the drawing is resized, the image scales smoothly.
However, in a pixel-based drawing, your drawing is stored as many dots (pixels) in rows and columns. When you resize a pixel-based image, the dots will be enlarged. This can result in jagged edges known as pixelation and aliasing and thus the quality of the image will go down. Pixel-based drawings often have larger file sizes compared to simple vector drawings.
For example: Karbon is useful for creating cartoons drawings or editing clip art which often needs to be resized to fit in a document or on a poster. Krita is more suited to painting pictures or editing photographs.
To get started with Karbon quickly, you might want to try opening and modifying some of the images from the Open Clip Art Library.