Minimal Pairs
/ð/ (voiced dental fricative) and /z/ (voiced alveolar fricative)
then
Zen
clothe
close
bathe
bays
lathe
laze
writhe
rise
breathe
breeze
tithe
ties
seethe
sees
scythe
size
with
whizz
booth
booze
teethe
teas
Hythe
highs
loathe
lows
soothe
sues