Here are a couple keyword tools that can help expand on your root key word in a variety of helpful ways for Adwords campaigns or can even be used for niche research.

Keyword Research Engine is a new free keyword research too just released by CovertSEM.com. Essentially it can add power, size, info, product-based or demographic keywords to your root word to generate expanded key phrases you may not have thought of.

AdWords City, State Keyword Generator - This tool will generate a list of city and/or state combinations for any keywords you provide, allowing you to target every city and state in the USA (and territories) in your AdWords campaigns. It will give you the list in phrase, broad or exact match to pop right into Adwords.

example:
cosmetic dentist Los Angeles CA
cosmetic dentist Bell Gardens CA
or switch KW order - Beverly Hills CA cosmetic dentist

AdWords Occupations Keyword Tool - This tool will generate a list of occupations combined with any keywords you provide, allowing you to target almost 1,000 job titles in your AdWords campaigns.


AdWords Keyword Generation Tool - This tool will generate a new list of AdWords keywords based on a set of lists you provide.