Cousin:
A cousin is a relative with whom a person shares one or more common ancestors. The child of one’s aunt or uncle is called cousin.
Niece:
A niece is a daughter of one’s sibling or half-sibling. A niece is the son is the son of your sister or brother. The child of one’s brother or sister is called niece.
Differences:
| Basis | Cousin | Niece |
|---|---|---|
| Definition (www.oxforddictionaries.com) |
A child of one’s uncle or aunt. | A daughter of one’s brother or sister, or of one’s brother in law or sister in law. |
| Synonyms | Relative, nobleman and counterpart | Uncle, father, folk, aunt, mother |
| Antonyms | Nephew | |
| Types | The types of cousin are:
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| Word origin | It was originated from Middle English: from Old French cosin. | It was originated from Middle English: from Old French, based on Latin neptis. |
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