Word plonk with one letter changed

Letter on position 1 (p) changed: 1 word

clonk

Letter on position 2 (l) changed: 1 word

pronk

Letter on position 3 (o) changed: 3 words

Letter on position 4 (n) changed: 2 words

plook
plouk

Letter on position 5 (k) changed: 1 word

plong