The SEO Acronym list with a couple of my Shortbus versions added:

• SEO:    Search Engine Optimization
• Anchor Text:      Is the text that the link is attached to for example;  Come read my SEO Short Bus blog and learn everything about SEO. The “SEO Short Bus”  is the anchor text.
• Keywords: Those words that a person types in to a search engine to find what they are looking for on the internet.
• Long-Tail Keywords: 4 to 7 keyword phrases that a person types in such as “1967 ford mustang for sale in florida” very spacific search.