Your nephew's nephew is the son of one of your nephew's brothers or sisters. He is your great nephew.
Your mother's (mom) nephew is your answer.
Your nephew's son is your grand nephew or great nephew.
Your nephew's son is your great nephew. Your niece's son is also your great nephew.
Your wife's nephew is your nephew and his son is your wife's, and your, great nephew.
The male counterpart of a niece is a nephew.
Niece would be an opposite as a niece is female and a nephew is male.
Your nephew's son is your great nephew.
Your nephew's son is your great nephew.
In English language terms for family relationships, there is no relationship called "nephew once removed." The son of your nephew is your great nephew.
Your nephew's son is your grand nephew or great nephew. Some people say one, some say the other.
My nephew cannot hold a job.I have only one nephew. Though my nephew, we are nothing alike.