<b_jonas> perl -e {open$I,"<","wisdom/ance";$/=();$_=<$I>=~s/( fragrance)/$1, governance, guidance, independence, offence, refinance, residence, resistance, romance./r;open$O,">","wisdom/ance";print$O $_;}

A palindrome is a word that remains the same if you take it to the mirror dimension, and then take each individual letter back to the normal dimension separately.