x, adj.dat, adv.idx, adv.dat - WordNet database files 
(PC)  <P>
noun.exc, verb.exc. adj.exc adv.exc - morphology exception lists <P>
cousin.tops, 
cousin.exc - files used by search code to group similar senses <P>
cousin.tps, 
cousin.exc - files used by search code to group similar senses (PC) <P>
sentidx.vrb, 
sents.vrb - files used by search code to display sentences illustrating 
the use of some specific verbs <P>
<I>(The remainder of this manual page refers 
to database files by their default file name