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blood group vs O

O vs blood group

blood group and O both are nouns.

Word NounAdjectiveVerbAdverb
blood group Yes No No No
O Yes No No No
As nouns, O is a hyponym of blood group; that is, O is a word with a more specific, narrower meaning than blood group:
  • blood group: human blood cells (usually just the red blood cells) that have the same antigens
  • O: the blood group whose red cells carry neither the A nor B antigens
blood group (noun) O (noun)
human blood cells (usually just the red blood cells) that have the same antigens the blood group whose red cells carry neither the A nor B antigens
the 15th letter of the Roman alphabet
a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
Difference between blood group and O

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