A soft article of clothing that goes on the foot.
sock
A type of apron.
smock
To tap on the door.
knock
A group of sheep.
flock
What you use to tell the time.
clock
A place to park boats.
dock
A type of music.
rock
A sound a clock might make.
tock
What you should do to the door when you leave.
lock
A cube that you build with.
block
