There is a difference.
1. Different meanings:
Stupid: stupid; not smart: utterly stupid. This is stupid.
Stupidity: lack of knowledge; stupidity and ignorance: ignorance.
2. Different pronunciations:
Stupid: [ yú chǔn ]
Idiocy: [ yú mèi ]
Extended information
1. Synonyms of stupidity: ignorance, ignorance
1. Ignorance? [ wú zhī ]?
Explanation: lack of knowledge; ignorance: young and ignorant. Ignorant talk.
Quotation: Lu Xun's "San Xian Ji: The Changes of Hooligans": "Country people don't understand the charter of the concession. He comes to bully them in order to look down on their ignorance."
2. Ignorance ?[ méng mèi ]?
Explanation: ignorant; ignorant: ~ignorance.
Citation: Qu Qiubai's "Hungry Country Chronicles" 1: "Ignorance is also a part of life, and it is reflected in a moment."
2. Synonyms of ignorance: clumsy, dementia
1. Clumsy? [ zhuō bèn ]?
Explanation: Clumsy: clumsy in speech.
Quotation: Chapter 8 of Part 1 of Yang Mo's "Song of Youth": "I saw that bloated and clumsy body suddenly leaning against the back of the sofa, laughing with a mouth full of gold teeth. . ”
2. Dementia? [ chī dāi ]?
Explanation: Sluggish behavior, lack of energy: looking straight ahead.
Citation: Wei Wei, Chapter 10 of Part 6 of "The East": "Guo Xiang looked demented and was speechless for a long time.
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