Standard clipart is usually not a very detailed drawing. Mostly they are images that have little detail or are outline drawings. The standard clipart is for use on the web to use in documents.
Clip art, as its name suggests, is a form of graphic art that makes use of pre-existing images. These drawings / images are either copied or physically cut from existing works in the printed format on a particular topic. The sources of these pictures are either books that have entered the public domain or books specifically published for such use. Logos, mascots, identity and business cards, invitations, letterheads, etc., can be made by cutting or copying the images. Clip art facilitates the availability of a pool of generic art that can be used and reused by non-artists.
Your own pictures or designs that can you paste into a document such as a Christmas card