What type of writing is it with so and so words?

• Micro-fiction is 100 words. 
• Flash fiction is 100 - 1,000 words
• Short story is 1,000 -7,500 words
• Novelette is 7,500 - 20,000 words
• Novella is 20,000 - 50,000 words
• Novel is 50,000 - 110,000 words
• Epics and Sequels are 110,000+ words

source: http://www.fictionfactor.com/articles/wordcount.html