Nephew vs. Uncle

Nephew and Uncle Definitions
Nephew
A son of one's brother or sister or of the brother or sister of one's spouse.
Uncle
The brother of one's mother or father.
Nephew
A son of one's sibling, brother-in-law, or sister-in-law; either a son of one's brother (fraternal nephew) or a son of one's sister (sororal nephew).
Uncle
The husband of a sibling of one's mother or father.
Nephew
A son of one's cousin or cousin-in-law
Uncle
Used as a form of address for an older man, especially by children.
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Nephew
(archaic) A son of one's child.
Uncle
A kindly counselor.
Nephew
A grandson or grandchild, or remoter lineal descendant.
But if any widow have children or nephews [Rev. Ver. grandchildren].
If naturalists say true that nephews are often liker to their grandfathers than to their fathers.
Uncle
(Slang) A pawnbroker.
Nephew
A cousin.
Uncle
Uncle Uncle Sam.
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Nephew
The son of a brother or a sister, or of a brother-in-law or sister-in-law.
Uncle
The brother or brother-in-law of one’s parent.
Nephew
A son of your brother or sister
Uncle
The male cousin of one’s parent.
Uncle
(affectionate) Used as a fictive kinship title for a close male friend of one's parent or parents.
Uncle
(euphemistic) Used as a title for the male companion to one's (usually unmarried) parent.
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Uncle
(figuratively) A source of advice, encouragement, or help.
Uncle
A pawnbroker.
Uncle
An affectionate term for a man of an older generation than oneself, especially a friend of one's parents, by means of fictive kin.
Uncle
An older African-American male.
Uncle
Any middle-aged or elderly man older than the speaker and/or listener.
Uncle
A cry used to indicate surrender.
Uncle
To address somebody by the term uncle.
Uncle
To act like, or as, an uncle.
Uncle
The brother of one's father or mother; also applied to an aunt's husband; - the correlative of aunt in sex, and of nephew and niece in relationship.
Uncle
A pawnbroker.
Uncle
An eldery man; - used chiefly as a kindly or familiar appellation, esp. (Southern U. S.) for a worthy old negro; as, "Uncle Remus."
Plain old uncle as he [Socrates] was, with his great ears, - an immense talker.
Uncle
The brother of your father or mother; the husband of your aunt
Uncle
A source of help and advice and encouragement;
He played uncle to lonely students