What is SEO ?
The term used to describe the marketing technique of preparing a website to enhance its chances of being ranked in the top results of a search engine once a relevant search is undertaken. A number of factors are important when optimising a website, including the content and structure of the website's copy and page layout, the HTML meta-tags and the submission process.

What is Google Adwords ?
A Pay Per Click (PPC) program of advertising on Google. The ads appear on the right hand side of the Google Search page on keywords / key phrases that you choose.