Balance wheel and Bob

Balance wheel noun - A wheel that regulates the rate of movement in a machine; especially a wheel oscillating against the hairspring of a timepiece to regulate its beat.

Bob and balance wheel are semantically related. In some cases you can use "Bob" instead a noun phrase "Balance wheel".

Bob noun - A bunch of flowers.

Balance wheel and bob are semantically related. You can use "Balance wheel" instead a noun "Bob".