A cog commonly refers to a solitary tooth on a equipment. In the context of gears, a cog is a person of the specific enamel that make up the gear system. Gears consist of a number of cogs or tooth that mesh collectively to transmit power and motion.
When speaking about gears, it is common to refer to the collective arrangement of cogs or tooth on a equipment relatively than focusing on person cogs. Nonetheless, in sure contexts, the phrase “cog” could be applied to describe an specific tooth or the toothed part of a gear.