The difference between Speech bubble and Thought bubble
When used as nouns, speech bubble means a rounded outline, containing words, representing speech in a cartoon, whereas thought bubble means a rounded or cloud-shaped outline, containing words, representing thought in a cartoon.
check bellow for the other definitions of Speech bubble and Thought bubble
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Speech bubble as a noun:
A rounded outline, containing words, representing speech in a cartoon.
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Thought bubble as a noun:
A rounded or cloud-shaped outline, containing words, representing thought in a cartoon.
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Thought bubble as a noun (idiomatic):
An ill-conceived idea.