You can only change ONE letter, AND/OR rearrange the letters currently available. The first word is:
WINS
hear
hoar
rhea
arch
ache
each
case
aces
cess
ices
sect
celt
cell
sell
lest
list
mist
stem
stem
stew
step
sept
People descended from a common ancestor; used especially of the ancient clans of Ireland
spat
- sorry ;-D
taps