The phrase "wool in your head" is an idiom that means someone is considered a bit slow or not very intelligent. It suggests that their thoughts or reasoning may be clouded or unclear, like wool obstructing clear thinking.
wool
is wool more absorbent than cotton
Cotton, They're soft than wool (i guess) but i choose cotton
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yes. wool is from goats but cotton balls are made from cotton.
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Cotton is a botanical product: wool is spun from animal fleece.
Cotton wool is cotton, a botanical resource. Chemically, it is not classified as an element.
Your answer depends on the quantity of cotton wool -- absorbent cotton that you want to weigh.
The common thing in cotton wool is cotton. Cotton wool isn't really wool -- it's cotton from which the large dirt and foreign objects have been removed. It is commonly used for first aid gauze or tampons -- Americans call it 'absorbent cotton'. (The term cotton wool is UK-centric.)
Wool is generally warmer than cotton, due to the air spaces in wool.