Difference between Whirr and Churr

Whirr

Part of speech: verb

Definition: To move or vibrate (something) with a buzzing sound. To make a sibilant buzzing or droning sound. To cause (something) to make such a sound.

Part of speech: noun

Definition: A sibilant buzz or vibration; the sound of something in rapid motion. A bustle of noise and excitement.

Churr

Part of speech: verb

Definition: To make the prolonged trilling sound of an insect (e.g. a grasshopper, a cicada).