Are SEO (Search Engine Optimization) and SEM (Search Engine Marketing) just two names for the same thing?

Is Google still the # 1 Search Engine in the United States in terms of search volume?

Is it always true that the best pay-per-click ads are the ones that target the greatest number of people?

Is it always true that the best pay-per-click ad campaigns have measurable results?

If you pay fees for professional SEM Management Services, will you have less of a budget to spend on your ads/campaigns?

If you are using pay-per-click, is it true then that you need not pay so much attention to the content on your website?

Do lodging prices contained in your Google ad text have to be found on the immediate landing page of your site?

If you are a US Company, your Google ads can only reach English speakers residing in the US. Correct?

Does your website allow you to see and score your effectiveness and results from SEM, including SEO?

Is it true that consumers feel that organic search results are more credible than being found in a "Sponsored Listing"?