Seven-letter words - change zero to two letters to make a new word (Part 1)

ingrown

courting

[psst. that’s 8 letters]

From “ingrown”:

regrown

grownup

pronoun

unspool

snooper

onerous

soupçon

columns

monocle

monolog

moondog

Mongols

blossom

bloomer

belabor

abhored

harbors