Onomatopoeia refers
to the formation of words, which (when spoken aloud) imitate the sounds related
with the things/actions they refer to.
Boom: Bang, explosion,
resound, etc.
Purr: Low
continuous vibratory sound (especially of a cat), whirr, drone, etc.
The fireworks’ boom
frightened the baby.
The cat purred when his
master patted him.
