Appearance
Gnomes are a short creature that live in the wild. They do not usually grow more than 3 feet tall. Male gnomes usually have a full beard and mustache. The clothes the gnome wears make the gnome the most recognizable. The trademark red hat is what most people look for in a gnome.
https://twimg0-a.akamaihd.net/profile_images/2533440309/Sneaky_Gnome_Note_Card_from_Baclori__1_.jpg
Characteristics
Gnomes are usually curious, cleaver, crafty, tricky, and they are usually funny if you can find a good tempered gnome. :)
http://4.bp.blogspot.com/-sYTDjDODR68/TVqhNmibhKI/AAAAAAAAAGc/9c9Etn9ofO8/s1600/gnome+1.JPG
http://www.fridaythoughts.org/wp-content/uploads/2011/06/gnome.jpg