Doing baseboards in my home. Nail gun or brad nail gun?

I'm doing baseboards in my home and then want to eventually move to crown molding. I believe I will need a nail gun however, what is the difference with a nail and a brad gun? My air compressor came with a nail gun but it only uses small nails (up to 1") or staples. Also, what is a fair price I... show more I'm doing baseboards in my home and then want to eventually move to crown molding.

I believe I will need a nail gun however, what is the difference with a nail and a brad gun? My air compressor came with a nail gun but it only uses small nails (up to 1") or staples.

Also, what is a fair price I really don't need an expensive one just for around the house. As long as it does the job.

Thanks much!!
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