different between partof vs partsof

partof

partof From the web:

• what part of
• what part of speech is is
• what part of speech is all
• what part of the brain controls speech

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partsof

partsof From the web:

• what part of the brain controls memory
• what part of speech is the
• what part of the pig is bacon
• what part of the brain controls emotions
• what part of the brain controls balance
• what part of the cow is brisket
• what part of the brain controls speech
• what part of the brain controls movement