Yes. See http://thunderstone.master.com/texis/ma ... 3aa7027f10
for an example of how. Ignore the bits about delexp and addexp if you're not using -k with gw. Otherwise supply your expression(s) instead of the one in the example.
Sorry, incomplete thought. The above will index all noise words.
Then in your search you need to use <apicp noise ...> to set the desired noise list (or <apicp keepnoise on> for none).
See http://thunderstone.master.com/texis/ma ... 3b4f198e11