A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

Photo of gears and cogs

Pete Birkinshaw / CC BY-SA

Cis forCog

Cogs are the small "teeth" around the edges of gears. Cogs allow the gears to grip onto each other as they turn around.

List of devices, Parts of things