Is "ROM" the same as internal flash memory? I saw the Nexus S storage specs are

512MB RAM + 16GB iNAND flash memory


and for the HTC Incredible S:

768 MB RAM and 1.5 GB ROM and microSD slot up to 32GB (8GB card included)


Is the Incredible's ROM the same thing as the Nexus's iNAND flash memory?
Yes, you can see here that the HTC's ROM is referred to as "internal storage" (although it says 1.1 GB): http://www.htc.com/www/product/incredibles/specification.html.