In Firefox, a keyword (as it relates to bookmarks) is a word you type in the URL bar to access a website. For example, I use “gq” to get to General Questions and “imho” to get to that other one.
A tab group, obviously, is a group of tabs like all the SDMB sub-forums together.
Is there any way I can Firefox to open up GQ, IMHO, MPSIMS, etc. all in their own tabs when I type in “sdmb” in the bar?